taste

You’re All Good Eggs: New research shows that specialty eggs aren’t any better for the environment or more delicious

Jun 9 2010

Next year, I will decorate Easter eggs and they will have faces. See 39 other pictures of egg face dioramas at The Design Inspiration by clicking on image

Two articles about eggs published last week have rocked my commitment to paying the specialty egg surcharge. I’m still tentatively on the organic, cage-free, local egg bandwagon for animal welfare and health concerns, but I have to admit that even those reasons may be a little flimsy. The four main reasons given for the superiority of specialty eggs are:

1. They’re better for the environment
2. They taste better
3. They’re produced in a more humane way
4. They’re healthier

There may also be an argument for supporting local producers who might employ less exploitative or abusive labor practices, although that’s not guaranteed. In order to help offset the increased labor requirements of non-conventional practices, small and local farms often rely on unpaid interns and family members, including children. Not that I think it’s a major ethical abuse to have your kids gather eggs, but I often feel at least a little pang of sympathy for the kids—often Amish, sometimes very young-looking—manning farmer’s market booths alone. So I’m deliberately tabling the labor issue because 1) I suspect that the issue of labor conditions at small, local farms vs. big, industrial ones is, like so many things related to the food industry, complicated and 2) it’s nowhere near the top of the list of most consumers’ concerns about eggs.

1. Green Eggs vs. Ham

On June 1, Slate’s Green Lantern reported that specialty eggs (cage-free, free range, and organic) have a greater environmental impact than conventional based on land use, greenhouse gas emissions, and feed efficiency (measured by kg eggs laid/kg feed). The article also noted that according to life-cycle analysis, a recent review article by two Dutch researchers found no consistent or conclusive difference between the environmental impact of pork, chicken, milk, and eggs. Beef requires more land, water, and feed, but pound for pound (or kilogram for kilogram—most life-cycle analyses are European), the review, “did not show consistent differences in environmental impact per kg protein in milk, pork, chicken and eggs.”

The Lantern didn’t evaluate the transportation costs “since the majority of the impacts associated with chicken-rearing comes from producing their feed.” For local eggs, the reduced transportation costs might help balance out the increased feed requirement, but that’s just speculation. For cage-free, free-range, organic, or vegetarian eggs, transportation costs probably further increase the relative impact because not only do they travel just as far or farther than conventional eggs to get to the market, there are probably costs associated with transporting the additional feed they require.

I don't remember where I first heard the story about the egg yolk-inspired label, but it's documented in multiple places, including Red, White, and Drunk All Over and the biography of The Widow Cliquot by Tilar MazzeoMy initial response was basically:

Well, that’s too bad, but efficiency be damned, if it takes more feed and produces higher ammonia emissions to treat chickens humanely and produce healthy eggs with yolks the vibrant orange-yellow of a Veuve Cliquot label, so be it. I know specialty eggs are better, I can see and taste the difference.

2. Golden Eggs

Not so much, apparently. The very next day, The Washington Post published the results of a blind taste test of “ordinary supermarket-brand eggs, organic supermarket eggs, high-end organic Country Hen brand eggs and [eggs from the author’s own backyard chickens].” Blindfolded and spoon-fed, the tasters—two food professionals and six “avocationally culinary” folks with “highly critical palates”—struggled to find differences between the eggs, which were soft cooked to ensure firm whites and runny yolks.

And apparently, this isn’t a new finding. It replicates the results of years of research by food scientists:

Had Pat Curtis, a poultry scientist at Auburn University, been at the tasting, she wouldn't have been at all surprised. "People's perception of egg flavor is mostly psychological," she told me in a phone interview. "If you ask them what tastes best, they'll choose whatever they grew up with, whatever they buy at the market. When you have them actually taste, there's not enough difference to tell."

The egg industry has been conducting blind tastings for years. The only difference is that they don't use dish-towel blindfolds; they have special lights that mask the color of the yolks. "If people can see the difference in the eggs, they also find flavor differences," Curtis says. "But if they have no visual cues, they don't."

Freshness can affect the moisture content, and thus the performance of eggs for some applications, especially recipes that rely heavily on beaten egg whites like meringues or angel food cake. But probably not enough for most people to notice. The author also tested a simple spice cake with super-fresh eggs from her backyard versus regular supermarket eggs. The batters looked different, but once the cakes were baked and cooled, they were indistinguishable. Read more

Who Says Robots Can’t Taste?: On Cooking Robots and Electronic Noses

Apr 16 2010

The color of the stuff in the bowl for some reason made me realize, for the first time, the coincidental similarity of Freud's "unheimlich" and the Heimlich maneuver. Image from: http://www.fanpop.com/spots/bender/links/2942473 

Kantos Kan led me to one of these gorgeous eating places where we were served entirely by mechanical apparatus. No hand touched the food from the time it entered the building in its raw state until it emerged hot and delicious upon the tables before the guests, in response to the touching of tiny buttons to indicate their desires.—Edgar Rice Burroughs, “A Princess of Mars” (1912)

Chef Motoman griddling up okonomiyaki from http://www.rutgersprep.org/kendall/7thgrade/cycleD_2008_09/mk/burgerflippingrobot.jpgBy now, robots who can cook are nothing new. Most of them are basically one trick ponies (at least culinarily): a Swiss robot that was taught to make omelets to demonstrate its abilities, Japanese robots that can grill okonomayaki or make octopus balls from scratch.There’s even a restaurant called Famen in Nagoya staffed by two robots who act out a comic routine and spar with knives in between preparing bowls of ramen. However, the cooking robot recently introduced by two Chinese unversities that’s making the rounds online this month comes closer to the fantasy in the Burroughs story of something that can produce a huge variety of foods on demand, almost like replicators on Star Trek. This new cooking robot can make 300 different dishes based on the offerings of four top chefs in Jiangsu Province and may soon be able to produce up to 600.

is this really nightmare-inducingly realistic? from http://www.nextnature.net/2009/06/robot-hand-meets-sushi/What strikes me about the media coverage of cooking robots is the paradox that, on the one hand, the fact that they can do something so essentially human is a substantial part of the delight they inspire. Their food-related activities are often designed to soften peoples’ resistance to robots—for example, researchers at Carnegie Mellon developed the Snackbot that they introduced to a reporter for the New York Times last month to “gather information on how robots interact with people (and how to improve homo-robo relations).” But on the other hand, the essential humanness of cooking can also make the robots especially unnerving. In fact, the more human, the more they seem to bother people. The Engadget article on the sushi-grabbing hand, “Chef Robot makes its video debut, nightmares forthcoming,” seems mostly disturbed by how “realistic” the hand looks:

In case you missed it, the robot itself is actually just a standard issue FANUC M-430iA robot arm with a way too realistic hand attached to it, which apparently not only helps it prepare sushi, but some tasty desserts as well. Head on past the break for the must-see video, you've nothing to lose but your ability to unsee it.

Though usually slightly less dramatic, most other articles I’ve seen about cooking robots end with some sort of joke or disclaimer, which usually reflect anxieties about the threat that cooking robots pose to the boundary between human and machine.

If this thing ever gets imported to the U.S., it would need to make fortune cookies too. But what would a robot fortune say?—CNet (on the 300-dish Chinese cook)

More than 200 diners have enjoyed the machine's cuisine thus far, and reportedly taste testers have found the food to be on par with a traditional restaurant kitchen, flavor-wise. (No mention has been made of the robot's plating abilities.)—CNet (on a prototype developed by a retired professor using an induction burner and robotic arm)

While it lacks the personal touch and the ability to hold some small banter with regular guests, at least you can be sure the fingers have not gone around digging noses or scratching butts.”—Ubergizmo (on the sushi hand)

“No matter how skilled Motoman is, I doubt real chefs like Anthony Bourdain or Mario Batali would be caught dead cooking next to him.” Robot Living (referring to Chef Motoman, who was designed to work alongside humans in a restaurant environment)

A seemingly irrepressible impulse to name something robots can’t infringe on, like speculating about the future or making the kind of aesthetic and creative decisions that go into plating, or find some other way to distinguish them from human chefs—the ability to banter or pick their nose or smoke and hate on vegans or compete in elaborate cooking competitions. Even the NYTimes article, which focuses mostly on how food “humanizes” robots, ends by erecting a wall based on the ability to taste:

The real obstacle to a world full of mechanized sous-chefs and simulated rage-filled robo-Gordon Ramsays may be something much harder to fake: none of these robots can taste.

Keizo Shimamoto, who writes a blog on ramen noodles and has eaten at Famen, the two-robot Japanese restaurant, said that the establishment was “kind of dead” when he ate there last year. Though the owner said that people do taste the food, according to Mr. Shimamoto, “It was a little disappointing.” It’s one thing to get people to stop by to see the robots. “But to keep the customers coming back,” he said, “you need better soup.”

And while it’s true that none of the robots mentioned in the article can taste, that doesn’t mean there aren’t other robots that can. Read more

The Sweet Science of Artichokes

Feb 17 2010

i wanted a picture of artichokes boxing, but this'll have to do. image from http://miscellainey.blogspot.com/2007_08_01_archive.html 

At least you’ll never be a vegetable—even artichokes have hearts. –Amelie

I suspect that one of the reasons artichokes show up in appetizers so often, especially in the sugar-loving U.S., is that they make everything you eat or drink for a little while afterwards, including water, taste slightly sweet. It’s not quite the simple straightforward sweetness of sucrose, which I’m not sure would be an especially desirable effect no matter how much you like sweet things. Instead, it’s more of a sweet-savory enhancement, perhaps even a little bit umami.I cropped the chart description for length, but will happily send it to anyone who's really interested

According to a 1972 article in Science, the first written account of artichokes’ capacity for taste perversion followed a dinner for biologists at the 1934 AAAS conference. The salad course consisted of globe artichokes, and someone must have taken a survey—of the the nearly 250 biologists in attendance, 60% reported that after eating the artichoke, water tasted different, a difference most of them described as “sweet” but a small number said was “bitter.”

The Science article reports on the results of an experiment that showed that artichoke extract modifies the taste of water by temporarily affecting the tongue rather than the food or drink (which makes it different than saccharine, which can make water taste sort of sweet and/or bitter as residue on the tongue is re-diluted). They also isolated two molecules found in artichokes—cholorgenic acid and cynarin, and found that both, independently, had a similar effects on the perceived sweetness of water as adding 2 tsp. sugar to 6 oz. water.

However, a less formal acknowledgment of the strange effects of the artichoke exists in the ancient folk wisdom that artichokes are “impossible” to pair with wine. An article in Wine News Magazine claims to “dispel” the “antiquated myth” of impossible pairings, but many of the suggestions purport to work by minimizing the presence or effect of the cynarin, either by boiling the artichoke in "ample water” or serving it with acids like lemon and/or mayonnaise. Leaving aside for the moment the question of whether either technique actually does anything to the cynarin and/or chlorogenic acid, I’m not sure that eliminating the chemical basis for the unique taste of the artichoke passes muster as a successful “pairing.” Essentially what they’ve done there is pair the wine with a less-artichokey version of the artichoke.

The Science article notes that the effects of cynarin and cholorogenic acid last longer than the sweet taste of sugar or saccharine, but are weaker and shorter-lived than that of miraculin, the protein in “miracle fruit.” Miraculin works by adhering to sweet-receptors on the tongue and acids in food, which makes the acids activate the sweet-receptors. I tried that with a bunch of friends shortly after The New York Times reported on it, and it really is trippy—lemons taste like candy, goat cheese tastes like cheesecake, and we all got stomachaches from eating so much acidic food in such a short period of time.

However, the protein miraculin seems to affect a much larger percentage of the population than the acids in artichoke. Just like at the AAAS dinner, a large number of the 1972 experiment’s participants didn’t experience a sweet taste after consuming artichoke extract. And again, a very small number actually said that the artichokes made water taste bitter. So it seems like cynarin/cholorgenic acid must have a different kind of mechanism, one that works for a majority of the population but exempts a substantial minority. Sadly, I can’t for the life of me figure out what it is. Does it inhibit bitter receptors? Attach temporarily to a certain kind of sweet receptor not everyone has? It seems to make white wines taste more sour, so perhaps it inhibits the tongue from registering the sugars in the wine? I don’t know, and I have searched. If you know, please share.

Anyhow, back to the question of what might alter or inhibit the cynarin and/or cholorogenic acid. In a post on "Transcription and Translation" also largely based on that 1972 Science article, biochemist Alex Palazzo claims that “pickled artichoke hearts don’t have this property.” I’m not entirely convinced, although this might be an issue of semantics. I won’t dispute that the sweetish aftertaste of canned or jarred artichokes seems muted in comparison with fresh artichokes, but I swear that even in that ubiquitous creamy, spinach-filled dip, or as a pizza topping, or in salads, or when added to paella, artichokes preserved in brine do contribute a subtly-sweet taste that affects the entire dish and any accompanying beverages. However, again based on my own subjective tastes and personal experience, marinated artichokes have little or no sweet aftertaste.

The difference seems to be that marinades, by definition, contain acid whereas brines typically do not—brines are just salty solutions. Now, pickling can imply either. Traditional pickling methods involve fermenting foods in brine, with no added acid. Their sourness is a product of the acids produced during fermentation. The more common form of pickling today begins with a solution that has added acids, usually vinegar. If Palazzo was referring only to the latter method—which would be artichokes labeled “marinated,” I agree with him. That also makes sense with the chefs’ suggestions to add acids in order to make artichokes play nice with wine; added acids must interfere with the cynarin and/or cholorogenic acid in the artichoke. But salt doesn’t seem to. Artichokes sold canned or jarred in brine (also technically “pickled”) still make food taste sweet.

Tomorrow, as this is apparently becoming artichoke week, I’ll post a super-easy recipe you can try to test the effects of artichokes in brine for yourself.

How to Eat an Artichoke, and other things trivia texting services can’t tell you

Feb 15 2010

buying two fat globe artichokes in February in Michigan feels positively *decadent*

Every time I eat a whole, fresh artichoke I wonder two things:

photo by Matthew Wallenstein1) Who was the first person to take the time to figure out that if you cook this giant thistle bud and then remove all the stuff that’s still completely inedible, at the very center, there are a few ounces—not more than a few bites worth—of flesh that’s not just edible, but really tasty? (which frequently leads to questions 1a: how hungry would you have to be? and 1b: what else might that person have attempted to cook and eat?) and

2) How often do artichokes inspire that question? Like, in what percentage of instances where globe artichokes are prepared and consumed with at least some of their inedible parts intact do they cause people to wonder about their origins? Is it over 50%? Could it be as high as 70%? How many times, over how many different artichokes, has some version of the same conversation about the wonder and mystery of the artichoke’s discovery taken place?

Neither of which are answerable. The most we can know about the first person (or persons) who ate artichokes is that they probably lived in North Africa, where the giant thistles are still found in their wild form and where they acquired the Arabic name “al kharshuf,” which all the European names were derived from. But despite years and years of artichoke eating, I had never bothered to even find out that much because it’s not really a need to know kind of wonder that artichokes inspire. It’s more that they activate a sense of awe. Wonderment, I guess.

I mean, how weird and wonderful is it that this thorny armadillo of a vegetable exists? That there’s just a tiny piece of edible flesh clinging to each of the tough, pointy leaves and once you remove all of them and the bristly “choke,” you uncover this amazing savory-sweet heart that tastes completely unlike anything else in the world (except, apparently, the related cardoon I’ve never encountered)? If you read about it in a poem, you’d probably think it was a totally clumsy, ham-handed metaphor, too obvious by half. How literally incredible that some plant just happened to evolve that way.

Nonetheless, I decided to put question #1 to one of those crazy new services that charge you a fee to google shit for you, you lazy git text you answers to random questions. I asked kgb “Who was the first person to eat an artichoke?” at 5:57 pm. Here’s the exchange that followed:

From 542542

Thanks and sit tight. kgb is researching your answer & will send it shortly ($.99/answer). Msg&Data rates may apply. Reply HELP for help or STOP to cancel.

Received: Mon Feb 15, 5:58 pm

From 542542

Thanks for using kgb_Do you have any questions for us? We would love to answer it. Ask us! 24/7. No charge. kgb_team

Received: Mon Feb 15, 5:59 pm

To 542542

Never received answer to question: who was the first person to eat an artichoke?

Sent: Mon Feb 15, 6:02 pm

From 542542

Sorry for the delay. Pliny the Elder observed in 77 A.D. that Romans consumed artichokes. The name of the person to try it is unknown. No charge for this one.

Received: Mon Feb 15, 6:10 pm

So at least they don’t charge you if they can’t answer, and apologize if they get a non-answer to you in less time than it would take a sumo wrestler to stomp your ass. (I suppose that’s non-endorsing with faint praise?) ChaCha, “ur mobile BFF,” also basically threw in the towel:

The origin of artichokes is unknown, they are said to have come from the Maghreb (North Africa), so who knows who ate one first! Link

That “so” weirdly implies a causal connection between the fact that they’re from North Africa and the fact that no one knows who ate one first which seems a bit “Maghreb, land of mystery about which no historical facts can be ascertained!” If they were said to come from Sweden, would that also explain why we don’t know who ate one first? Another of our BFFs at ChaCha borrows a line from Greek mythology:

Cynara was a woman whom Zeus fell in love with and she betrayed him and he turned her into an artichoke because she ate them. Link

The myth of Cynara actually has a neat legacy in the names of one of the molecules that give artichokes their unique capacity for taste perversion—cynarin, which I’ll be writing more about in the next artichoke entry—and the liqueur made from artichokes—Cynar. But it doesn’t get us any closer to an answer to the questions.

I think a lot of what makes artichokes so intriguing is the fact that you have to be taught how to eat them, or initiated into what seems like a secret order of artichoke eaters. They’re complicated and fussy, the vegetal antithesis of the apple, whose starring role in so many sacred and secular stories seems fundamentally tied to how easy and natural the act of biting into a raw apple is. Surely Eve could have withstood the temptations of an artichoke. Surely Snow White would have figured out her disguised stepmother was up to no good by the time she was done with all that cleaning and trimming and cooking. You simply could not stumble on an artichoke in the wild and intuit how to consume it. And that’s not just because it has to be cooked: how much easier is it to figure out what to do with a potato or a winter squash?

off with its headMy mom was the one who taught me how to prepare and eat artichokes. On the rare occasions when they happened to be on sale at the grocery store, she would buy just one. We never ate them with or in a meal, always by themselves, often on the same day that we had gone shopping. I never saw other people eating them—not at restaurants or on television or at friends’ houses. I don’t even remember ever seeing my dad eat one. So artichokes always seemed like this special secret vegetable that only my mom knew what to do with.

However, wikipedia claims that what she always did with them: cut off the stem and the top, trim the leaves, steam until tender, and eat with butter is the way they are “most frequently prepared” in the U.S. I kind of doubt that in terms of the total volume of artichoke consumed; most artichokes eaten in America are probably consumed in the form of a creamy dip with a 90% chance of including spinach. But that kind of dip is almost always made with artichokes that have been frozen or preserved in brine, even by home cooks and Alton Brown. If you’ve ever had fresh artichoke, you already know why: they are one of the great exceptions to the general rule that everything savory is better with cheese and/or garlic. Fresh artichokes are so good by themselves, all you really need to do is steam them and eat them. So this won’t seem like much of a recipe, but in case your mom never showed you how, instructions and pictures after the jump: Read more

Feeling "umami": On taste, subjectivity, and metaphor

Sep 1 2009

The Modern Four Taste Orthodoxy

The idea that there are four basic tastes—sour, salty, bitter, and sweet—was widely taken to be gospel truth until 2002, when the taste receptors for glutamate were identified. Glutamate, and the "umami" flavor it imparts to foods like seaweed, bacon, parmesan cheese, and Doritos, was first identified and isolated by a Japanese chemist named Kikunae Ikeda in 1908. But the four-taste model was so dominant that umami's status as a distinct taste was considered "controversial" until its molecular basis was confirmed almost a century later. Here's the description of umami in a book titled Sensory Processes published in 2002 (before the taste receptors were identified):

Umami originated from a glutamate derived from seaweed. The chemical substance is commonly known as MSG, monosodium glutamate, and, by itself, has no odor and an unusual taste that is approximated, so they say, by appropriate combinations of the four primary taste qualities. Whether umami is a result of the unique combination of the four tastes or an independent classification of is own is open to debate (176).

Oh, they and the things they say.

Umami's been gaining traction—Kikkkoman's current advertising campaign is "discover umami"(.com)—but it hasn't quite arrived. This past Sunday on Iron Chef America, one of the judges said he detected some "umami" in a coconut-based soup, and then he had to define it for the other judges (and perhaps the audience?). His first stab was to call it an "illusory" taste, although he did follow that up by ranking it with "sweet, salty and sour," so perhaps he actually meant something more like "ineffable." Either way it shows how dominant the classical four tastes still are.

Except "classical" isn't quite right word, because it turns out the idea that we only experience four distinct tastes is actually a pretty recent invention—more recent than Ikeda's "discovery" of umami, actually. Traditional Chinese medicine named five tastes: sour, bitter, sweet, pungent, and salty, each one corresponding with one of the five elements or movements that are omnipresent in early Chinese thought. Aristotle claimed there were only two, which doesn't come as that much of a surprise given his characteristic love of dualities. Just as he divided visual perception into the "fundamental colors" black and white, which contain all the elements of all the other colors we perceive, Aristotle thought the whole range of gustatory sensations derived from the "fundamental tastes" of sweetness and bitterness. He also proposed a second-order classification of seven "primary flavors" that corresponded with his rainbow of seven "primary colors": sweet (which included fatty or oily), bitter, salty, harsh, pungent, astringent, and acidic or sour. Hard to say now what exactly the difference was between harsh, pungent, and astringent—I suppose the latter might be something like the tannins in tea and red wine while "pungent" instantly evokes blue cheese although it often just acts as a modifier rather than a descriptor—a pungent smell is strong, not necessarily strongly any particular thing. It's hard to even think of those things as taste categories on the same level as "sweet" or "sour."

But one question that raises is whether or not it's hard to think of them that way because there's some objective difference between sweetness and astringency or because it's just unfamiliar to think of "astringent" as a primary taste category. Certainly tannins cause a particular reaction on people's tongues—is that less of a distinct taste experience than the reaction caused by sugars?

Colors are a useful parallel, again. A linguistics professor I had at NYU told us about this experiment that my casual googling is not coming up with, but here's the gist: if you give children a set of colored tiles and tell them sort them into as many piles as they want, by color, there are predictable, reliable differences between the number of piles they make that correspond to the number of primary colors in their primary language. So, for example, English-speaking kids generally put all hues of blue in one pile while Russian-speaking kids usually separate lighter blues from darker blues because they have two "primary color" words for those shades. It's one of the classic examples of how language can shape how we perceive the world rather than just reflecting it. Also a reason why translation is always imperfect. 

Henning taste tetrahedronGetting back to the four taste orthodoxy, that was something a German psychologist named Hans Henning  came up with in 1916. He devised a ""taste tetrahedron" with each of the four tastes he thought were primary at the four vertexes. The idea was that flavors could be conceptually mapped onto geometric plane based on which of the primary flavors they were comprised of—a flavor relying on two of the primary tastes would be located on the edge between those two vertexes. Flavors that used three would be on the surface between the relevant three points. And the tetrahedron was hollow, according to Henning, because no substance could produce all four taste sensations. So while taste itself was three-dimensional, tastes were two-dimensional at best. Read more