Question 1

Why does coriander taste like soap to some people?

Accepted Answer

Because of genetics, and specifically because of how some people's olfactory receptors detect a group of chemicals that coriander shares with soap.

Fresh coriander leaves — sold as cilantro in North America — contain several aldehyde compounds. The same family of aldehydes is produced during soap manufacture and is found in some lotions and detergents. Everyone smells them. What differs is which of coriander's many aroma compounds a person's nose emphasises.

Genetic studies have identified variants near a cluster of olfactory receptor genes, most consistently **OR6A2**, associated with the soapy perception. That receptor is sensitive to exactly those aldehydes. People carrying the variant appear to detect the soapy notes more strongly relative to the herb's pleasant citrus and green notes, so the soap dominates.

The effect is real but not absolute. Surveys put the proportion who dislike coriander at roughly 4 to 14 percent depending on the population, with markedly lower rates in cuisines where coriander is used heavily — South Asian, Latin American and Middle Eastern populations report it far less often than European ones. That suggests exposure and familiarity matter alongside genetics.

It is not an allergy and carries no health consequence.

Two practical notes. Crushing or chopping the leaves accelerates the enzymatic breakdown of those aldehydes, and some people who dislike whole leaves find finely minced or blended coriander less objectionable. Cooking also reduces the effect, since the volatile aldehydes dissipate with heat — which is why coriander stirred into a hot curry tastes different from the same leaf scattered raw.

Coriander seed is a different spice entirely, warm and citrusy, and does not carry the soapy compounds.

Question 2

Why do people taste things so differently, and what is a supertaster?

Accepted Answer

Because taste perception varies genetically, anatomically and by experience — and the differences are large enough that two people eating the same thing can be having substantially different

Question 3

What are tannins?

Accepted Answer

A group of naturally occurring compounds — polyphenols — that bind to proteins, which is why they produce a drying, gripping sensation in the mouth rather than a taste. Why they feel rather than

Question 4

Why does food taste bland when you have a cold?

Accepted Answer

Because most of what you experience as flavour is actually smell, and a blocked nose removes it. The tongue does very little of the work. Taste receptors detect only five basic qualities: sweet,

Question 5

Why do recipes say to fry spices before adding liquid?

Accepted Answer

Because the compounds that carry most spice flavour are fat-soluble, and heating spices in fat extracts and disperses them in a way water cannot. The technique is called blooming, and it is the

Question 6

Why does food taste different as you get older?

Accepted Answer

Because smell declines substantially with age and taste declines modestly — and since most of what we call flavour is smell, the loss is far larger than it feels like from the inside. What actually

Question 7

Why do some cheeses smell so strong?

Accepted Answer

Because the microbes used to ripen them produce sulphur and ammonia compounds, and several of those compounds are chemically identical to ones the human nose evolved to treat as warnings. The main

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