Guajillo Powder: The Mexican Mirasol Chile, Dried and Ground

Mild, reddish brown and bright, guajillo is the chile behind a lot of Mexican mole pastes and adobo marinades. Guajillo powder is simply the dried chile, ground, and it’s one of the main Mexican chiles grown for drying. In Mexico it also goes by mirasol, a name Peru uses for a completely different chile, which has caused some confusion. The heat is gentle, with two published ratings putting it at 2,500–5,000 SHU, though we found no lab measurement of it.

At a glance

What it is

The Real Academia Española defines chile guajillo as a Mexican chile with a reddish brown, long, narrow fruit. Mexican agricultural writing calls the same chile guajillo or mirasol. A 2020 paper from Mexico’s agricultural research institute describes “el chile guajillo o mirasol (Capsicum annuum L.)” as one of the main types grown for drying, and a 2019 study of guajillo collections from northern Mexico writes “guajillo chili (mirasol)”.³⁴ The University of Arizona’s extension service also lists guajillo among the C. annuum chiles.

Capsicum annuum is native from the southern United States to Brazil and the Caribbean, and a 2014 study combining four lines of evidence places its domestication in central-east Mexico.⁵

Two stories get passed around a lot: that “mirasol” refers to the pods growing upright toward the sun, and that “guajillo” means “little gourd,” after the rattle of the dry seeds. Neither is shown to be wrong. We just couldn’t find a source for either.

Not the Peruvian mirasol

Peru uses the word mirasol too, for a different chile. Peru’s state news agency describes Peruvian ají mirasol as dried ají amarillo.⁶ Ají amarillo belongs to a separate species, Capsicum baccatum. So Mexican mirasol (guajillo) and Peruvian ají mirasol share a name but not a species. The claim that guajillo is a common chile in Peruvian cooking seems to come from this mix-up; see ají amarillo powder for the Peruvian chile.

Where it is grown

The 2020 paper puts the national average yield at 1.58 tonnes of dried chile per hectare, which it calls low, without giving the year of that figure.³ We found no current national production total for guajillo alone.

Flavor

Guajillo tastes of dried red chile, with a bright, slightly tangy fruitiness and mild heat. Food writing often compares it to cranberry, apricot, pine or smoke, but those are opinions, and we found no aroma analysis of guajillo to check them against. PepperScale, for one, describes guajillo as sweeter than you might expect, bright and tangy, with hints of cranberry and tea.² The 2019 study measured color, vitamin C, phenols, anthocyanins and antioxidant capacity in 30 dried guajillo samples from Durango and Zacatecas, but not aroma or pungency.⁴

Heat

Chile heat comes from capsaicinoids, mainly capsaicin and dihydrocapsaicin, and HPLC is the most accurate way to measure them.⁷ We found no HPLC measurement of guajillo.

You’ll often see guajillo compared to a jalapeño for heat, but we found no source that measured the two side by side. PepperScale compares the published ranges, giving the jalapeño 2,500 to 8,000 SHU, and concludes that guajillo is often equal in heat while a jalapeño can run hotter.² That’s a comparison of ranges, not a test. Individual pods vary, so taste before adding more.

How it is used

• Mole. Mexico’s agriculture ministry says dried ancho, mulato, mirasol, guajillo and pasilla chiles go mainly to the artisanal mole industry.⁹ For a ready blend, see mole powder.
• Marinades and adobos. The 2019 study calls guajillo the main ingredient in marinades (adobos), and notes it’s also used to extract natural dyes.⁴
• Chili. Saveur’s chili con carne pairs six dried guajillo chiles with six chiles de árbol, softened, seeded and pureed.¹⁰ See best spices for chili.
• Rubs. INDY Week’s guide suggests guajillo as a rub for chicken.¹
• Enchilada sauces and salsas. A natural fit, and PepperScale also lists salsas, sauces, soups and stews.²
• Pairings. PepperScale lists pairings including pork, tomatoes, chocolate, garlic, onion, cumin, oregano, lime and cilantro, and says the sweet, berry-like flavor suits the richness of pork.²

You may read that guajillo is “the” chile of North African harissa. We couldn’t trace that, and sources on harissa just name dried chile. See harissa powder.

Buying and quality

• Read the label. Pure guajillo powder should list only chile. A blended “chili powder” usually adds cumin, oregano and garlic; see chili powder.
• Color. A deep, even brick red with no brown or pale patches suggests fresh, well-dried stock. The 2019 study compared its samples’ hue with values it cites from the Mexican standard NMX-FF-107.⁴ We didn’t review that standard itself, so the color tip is a rule of thumb.
• International standard. Codex CXS 353-2022 covers whole, crushed and ground dried chile.⁸

Storage

We found no published shelf-life figure for guajillo powder from a regulator or standards body. Store it airtight, away from heat and light, and replace it when the color dulls and the smell fades.

Safety and nutrition

Mycotoxins. EU law sets maximum levels for dried Capsicum products “including chillies, chilli powder, cayenne or paprika”: 20 µg/kg ochratoxin A, 5.0 µg/kg aflatoxin B1 and 10.0 µg/kg total aflatoxins.¹¹ We found no recall or regulator finding specific to guajillo.

Nutrition. We found no nutrient analysis of dried guajillo to back up the vitamin and mineral claims you’ll see for it. For USDA figures on two related dried chiles, see ancho powder and pasilla powder.

Health claims. The strongest human evidence for capsaicin is about a prescription 8% skin patch, which a 2017 Cochrane review found can give moderate relief to a minority of people with postherpetic neuralgia.¹² That’s not dietary chile. We’re not claiming guajillo treats or prevents any condition.

History

Guajillo’s own history is thinly documented in the sources we could open. You may see a claim that Bernardino de Sahagún recorded mirasol chiles and the Aztecs’ heat rankings. We couldn’t trace it, so we’ve left it out.

Substitutes and comparisons

• Ancho powder and pasilla powder are its usual partners in mole and the closest swaps in a sauce; see also ancho substitutes and pasilla substitutes.
• For more heat: chile de árbol powder or cayenne pepper.
• For smoke: chipotle powder.
• For color with almost no heat: paprika.

PepperScale names ancho as the best substitute, while noting it’s much milder and lacks guajillo’s tang.²

Ratio (Method): With a mild chile like ancho, start with equal amounts and adjust to taste.