Background information: poblano peppers are one of the most common peppers in Mexican food. Pasilla peppers are something entirely different - the dried form of the chilaca.

I'm originally from Texas, where poblanos are commonly found in grocery stores. I moved to California a while back, and here they're still pretty easy to find, but they're always labeled "pasilla". Even at a local produce market with a decent amount of Mexican food (and Spanish-speaking employees) - and just recently I noticed they even have anchos (dried poblanos) labeled as "dried pasillas". I did manage to find one local Mexican restaurant menu online describing a chile relleno as a stuffed poblano, but otherwise it seems pretty universal.

So where did this come from? Via the above-linked wikipedia article, I did find a website saying it's the fault of the California produce industry for labeling them this way, but that's not the original reason. Is it all just the result of a single person getting it wrong a long time ago, and an entire produce industry building off of that?

  • I'm generally finding "we can't figure out why anyone would confuse/conflate the two. Looks like a grocer or distributor mixed them up and it just stuck" when I search. Jul 27, 2017 at 17:03

3 Answers 3


I have not been able to find any kind of detailed history of the pepper crop in California online.

However, I will observe that I've only seen chilaca peppers available in Northern California in the last 5 years. Previously, one never saw them, even at Latin markets. On the other hand, California grows enormous quantities of poblano peppers, which are larger, hardier, and have a longer shelf life than chilacas when fresh. Based on that, I suspect that some enterprising, dishonest produce supplier started supplying ancho peppers as pasillas to Mexicans in California decades ago, and after several decades of misnaming, the new names stuck.

I'll also observe that the dried poblanos sold as "anchos" in NorCal are a bit hotter than the ones sold as "pasilla", so it's also likely that there's two different varietals, bred here. So it's also possible that whoever bred the milder poblanos named them "pasillas" to differentiate them from the hotter ones, confusing everyone.


We use 100's of "pasilla" chiles at work each week (in California). Although they are all labeled as pasilla, it is obvious that they are poblano. The poblano, as previously stated, is a dark green, wide shouldered, about 4-5" in length, medium to hot chile. Also correctly stated earlier, an ancho ("ancho" actually translates to "wide") is a dried poblano. Pasilla's are actually a fairly difficult chile to obtain on a regular basis. I wanted to note, however; that the poblano's that we receive are more often than not grown IN MEXICO AND LABELED AS PASILLA. Curious. Pasilla chiles are a bit narrower at the shoulders, a bit longer than an ancho and depending on the growing environment, are about the same in heat index. Most pasilla that are commercially grown are used for dried chile.


I asked a checker, who is from Mexico, in my local market why the market mislables anchos as pasillas. She said some areas of Mexico call the ancho a pasilla and other areas call it poblano and so it depends on where the chilis come from. The problem with that explanation is that most chiles in American markets come from California.

  • 1
    Ancho generally refers to dried poblanos, not the pepper in general - though the Spanish Wikipedia article on poblanos does say that in some regions of Mexico poblanos are called anchos. It doesn't mention anyone calling them pasillas, though. (And the pasilla article doesn't say anything about poblanos.)
    – Cascabel
    May 20, 2017 at 1:08

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