Cilantro is one of the most polarizing herbs out there. For many, its bright, citrusy flavor makes it a staple in dishes like tacos, curries, and guacamole. But for others, it tastes unmistakably like... soap.
How can we experience cilantro so differently? Is it simply a matter of taste? As it turns out, no — our Great Cilantro Divide goes much deeper than tastebuds, all the way down to our DNA.
Let's dive into the fascinating science behind the cilantro soap gene, whether repeated exposure can de-suds your tastebuds, and how cilantro can offer you a wealth of health benefits. If you can stand the taste, of course.
Why Does Cilantro Taste Like Soap to Some People?
The soapy flavor some people associate with cilantro comes from aldehydes, natural compounds found in both cilantro (scientifically known as Coriandrum sativum) and, yes, soap. For people who carry a specific variation of the OR6A2 gene — often referred to as the "cilantro soap gene" — their olfactory receptors are more sensitive to these soap-simulating aldehydes.
That unfortunate genetic byproduct affects those with European ancestry the most, with 13% of people within that group reporting a soap-cilantro connection, according to a large study on the topic. Conversely, fewer than 10% of Latino, African-American and Asian participants reported a soapy flavor. That disparity makes sense when considering the origin of so many popular dishes that typically feature cilantro.
