cilantro haters...,

NYTimes | FOOD partisanship doesn’t usually reach the same heights of animosity as the political variety, except in the case of the anti-cilantro party. The green parts of the plant that gives us coriander seeds seem to inspire a primal revulsion among an outspoken minority of eaters.

Culinary sophistication is no guarantee of immunity from cilantrophobia. In a television interview in 2002, Larry King asked Julia Child which foods she hated. She responded: “Cilantro and arugula I don’t like at all. They’re both green herbs, they have kind of a dead taste to me.”

“So you would never order it?” Mr. King asked.

“Never,” she responded. “I would pick it out if I saw it and throw it on the floor.”

Ms. Child had plenty of company for her feelings about cilantro (arugula seems to be less offensive). The authoritative Oxford Companion to Food notes that the word “coriander” is said to derive from the Greek word for bedbug, that cilantro aroma “has been compared with the smell of bug-infested bedclothes” and that “Europeans often have difficulty in overcoming their initial aversion to this smell.” There’s an “I Hate Cilantro” Facebook page with hundreds of fans and an I Hate Cilantro blog.

Yet cilantro is happily consumed by many millions of people around the world, particularly in Asia and Latin America. The Portuguese put fistfuls into soups. What is it about cilantro that makes it so unpleasant for people in cultures that don’t much use it?

Some people may be genetically predisposed to dislike cilantro, according to often-cited studies by Charles J. Wysocki of the Monell Chemical Senses Center in Philadelphia. But cilantrophobe genetics remain little known and aren’t under systematic investigation. Meanwhile, history, chemistry and neurology have been adding some valuable pieces to the puzzle.

The coriander plant is native to the eastern Mediterranean, and European cooks used both seeds and leaves well into medieval times.

Helen Leach, an anthropologist at the University of Otago in New Zealand, has traced unflattering remarks about cilantro flavor and the bug etymology — not endorsed by modern dictionaries — back to English garden books and French farming books from around 1600, when medieval dishes had fallen out of fashion. She suggests that cilantro was disparaged as part of a general effort to define the new European table against the flavors of the old.

Modern cilantrophobes tend to describe the offending flavor as soapy rather than buggy. I don’t hate cilantro, but it does sometimes remind me of hand lotion. Each of these associations turns out to make good chemical sense.

Flavor chemists have found that cilantro aroma is created by a half-dozen or so substances, and most of these are modified fragments of fat molecules called aldehydes. The same or similar aldehydes are also found in soaps and lotions and the bug family of insects.

Soaps are made by fragmenting fat molecules with strongly alkaline lye or its equivalent, and aldehydes are a byproduct of this process, as they are when oxygen in the air attacks the fats and oils in cosmetics. And many bugs make strong-smelling, aldehyde-rich body fluids to attract or repel other creatures.