Mexican Chiles: Guide to Varieties and Uses

Chiles are the ingredient that defines Mexican cooking. Mexico has more than 60 cultivated varieties, each with a different flavor profile, heat level and culinary use. It's not just about "heat": chiles bring sweetness, smokiness, fruitiness, earthiness, floral notes... They're the most complex and fascinating ingredient in Mexican gastronomy. This guide will help you get to know the main ones and use them with confidence.

Dried Chiles: The Pillars of Salsas

Dried chiles are dehydrated versions of fresh chiles. As they dry, they concentrate their flavors and develop new notes. They're the base of salsas, moles and adobos.

Guajillo Chile

Flavor: fruity, slightly sweet, with moderate heat. It's the most used chile in Mexico.

Heat: ★★☆☆☆ (2,500-5,000 Scoville). Very manageable, almost everyone tolerates it.

Appearance: long (10-15cm), smooth, shiny skin, dark red color.

Uses: red salsa for enchiladas, salsa for chilaquiles, meat adobos, red rice. If you're only going to buy one dried chile, make it this one.

Recipes: red chilaquiles, red enchiladas, red table salsa.

In the US: available in Latin shops (£3-4/100g) and Amazon. It's the easiest dried chile to find.

Ancho Chile

Flavor: sweet, deep, with notes of raisin and chocolate. It's the dried version of the poblano.

Heat: ★☆☆☆☆ (1,000-2,000 Scoville). Practically no heat, it just brings flavor.

Appearance: wide and wrinkled (hence the name "ancho"), dark brown almost black.

Uses: mole poblano (it's the main chile), black mole, sweet adobos, chiles rellenos when fresh (poblano).

Recipes: mole poblano, adobo for carnitas.

Tip: it's so mild that you can blend it directly into creamy soups for color and flavor with no heat at all.

Chipotle Chile

Flavor: intensely smoky, sweet, with a medium heat that lingers. It's a ripe (red) jalapeño dried with smoke.

Heat: ★★★☆☆ (5,000-10,000 Scoville). Spicy but tolerable for most.

Appearance: wrinkled, coffee-colored, with an unmistakable smoky aroma. Sold dried or canned (in adobo).

Uses: smoky salsas, chicken/pork adobo, chipotle mayonnaise, creamy sauces. A teaspoon of chipotle transforms any dish.

Recipes: chipotle chicken, creamy chipotle salsa, chicken tinga.

In the US: chipotles in adobo (canned) are the most practical form. They're found in larger supermarkets (international section, ~£3) and in all Latin shops. A can lasts a long time because you use little.

Tip: freeze the leftover chipotles from the can individually in an ice-cube tray. That way you can use one or two each time without wasting any.

Árbol Chile

Flavor: direct, clean, with a sharp heat and nutty notes when toasted.

Heat: ★★★★☆ (15,000-30,000 Scoville). Quite spicy. Use with caution.

Appearance: small (5-7cm), thin, bright red.

Uses: spicy red table salsa, taquería salsa, chile oil, garnish.

Tip: toast 3-5 árbol chiles in a dry pan (careful, the vapours sting the eyes), blend with garlic, salt and a little vinegar. You've got the perfect hot salsa for tacos.

Pasilla Chile

Flavor: earthy, bitter (in the good sense), with notes of cacao and herbs.

Heat: ★★☆☆☆ (1,000-4,000 Scoville). Mild.

Appearance: long and dark, almost black. "Pasilla" comes from "pasa" (raisin) because of its wrinkled skin.

Uses: black mole, dark salsas; it combines wonderfully with ancho and guajillo (the "trinity" of chiles for moles).

Mulato Chile

Flavor: chocolate, tobacco, damp earth. It's the sweet, dark version of the dried poblano.

Heat: ★☆☆☆☆ (500-2,500 Scoville). Very mild.

Uses: mole poblano (alongside ancho and pasilla), dark salsas. It's hard to find in the US but can be ordered online.

Fresh Chiles

Serrano Chile

Flavor: vegetal, herbal, clean and direct heat.

Heat: ★★★★☆ (10,000-25,000 Scoville). Strong.

Uses: fresh green salsa, pico de gallo, guacamole. It's the most common fresh chile in everyday Mexican cooking.

In the US: hard to find. Substitute: fresh green birds-eye chile or hot green finger chiles. Italian peperoncino also works.

Jalapeño Chile

Flavor: vegetal, slightly sweet, variable heat (some are very hot, others almost mild).

Heat: ★★★☆☆ (2,500-8,000 Scoville). Medium.

Uses: pickled (nachos, pizza), stuffed (jalapeño poppers), salsas, rajas. It's the most internationally known Mexican chile.

In the US: sometimes found fresh in larger supermarkets or well-stocked greengrocers. Pickled ones are found in any supermarket. The fresh jalapeño can be substituted with a green finger chile + a little cayenne.

Fact: the chipotle is a ripe, smoked jalapeño. Same chile, different processing, completely different flavor.

Poblano Chile

Flavor: vegetal, earthy, slightly sweet with very mild heat. It's large and fleshy.

Heat: ★☆☆☆☆ (1,000-2,000 Scoville). Barely any heat.

Uses: chiles rellenos (the star dish), rajas con crema, chiles en nogada, rajas for tacos and quesadillas.

In the US: rare fresh. Substitute: a large Romano-style green pepper, roasted and peeled. It isn't identical but the fleshy texture is similar.

Habanero Chile

Flavor: intensely fruity (mango, passion fruit), floral, with EXTREME heat.

Heat: ★★★★★ (100,000-350,000 Scoville). VERY spicy. Extreme caution.

Uses: Yucatecan cooking (southern Mexico), habanero salsas, ceviches. Used in minimal quantities.

Warning: wear gloves when handling it. A single habanero can make a salsa for 20 people. If you touch your eyes after cutting it, you'll remember it for hours.

In the US: sometimes in international greengrocers or Latin shops. It also grows well in a pot in a warm climate.

Quick Reference Table

• No heat: Ancho, Mulato, Poblano → ideal for mild salsas and moles
• Low-to-medium heat: Guajillo, Pasilla, Jalapeño → for table salsas and everyday use
• Medium-to-high heat: Chipotle, Serrano, Árbol → for hot salsas and adobos
• Very spicy: Habanero → only for experts and in minimal doses

How to Use Dried Chiles: Basic Technique

1. Clean: open down one side, remove the seeds and veins (most of the heat is here).
2. Toast: dry pan over medium heat, 20-30 seconds a side. They should change color slightly and release their aroma. Don't burn them.
3. Soak: hot (not boiling) water for 15-20 minutes until flexible.
4. Blend: with garlic, salt and a little of the soaking water.
5. Strain: for smooth salsas, pass through a sieve. For rustic ones, leave it as is.
6. Fry: heat oil in a pan, pour in the salsa and cook for 5 min, stirring. This "refrying" deepens the flavor enormously.

Where to Buy Them in the US

• Latin shops: the best selection and prices. In London and other large cities there are multiple options. See our store guide.
• Amazon: decent variety, especially dried chiles and canned chipotles.
• Larger supermarkets: international section, chipotles in adobo and sometimes pickled jalapeños.
• Growing your own: many chiles grow well in a pot in a warm climate (habanero, serrano, jalapeño). One plant produces dozens of chiles over the summer.

Want to put your chile knowledge into practice? Start with a guajillo red salsa — it's the easiest and most versatile. From there, the world of chiles opens up before you.

How to Store and Preserve Your Chiles

Knowing how to store chiles correctly is as important as knowing how to use them. Good storage can keep their flavor and potency for months, while poor storage ruins them in weeks.

Dried chiles: the store cupboard is your ally

Dried chiles (ancho, guajillo, pasilla, árbol) keep best in a cool, dry, dark place. Store them in airtight bags or glass containers. Well stored, they last from 6 months to a year. A trick: put a bay leaf in the container to deter possible insects. If you notice them losing flexibility, it's a sign they've been stored too long.

Fresh chiles: smart refrigeration

Fresh jalapeños, serranos and habaneros last 1-2 weeks in the fridge in a paper bag (not plastic, which traps moisture). To keep them longer, you can slice them and freeze them on a tray before transferring to a freezer bag. That way you can use only the amount you need without defrosting everything.

Chiles in adobo: the freezer trick

An open can of chipotles in adobo lasts only a few days in the fridge. The best solution: freeze the chiles individually in an ice-cube tray with a little of their sauce. Once frozen, transfer to an airtight bag. Each cube is roughly one chipotle, perfect for adding to stews, marinades and salsas without waste.

Discover more about Mexican ingredients in our detailed recipes and find authentic chiles in the Mexican shops in your city.

Heat scales: the practical Scoville guide

Understanding the Scoville scale helps you choose the right chile for each recipe and tolerance. The poblano/ancho is the mildest (1,000-2,000 SHU), perfect for beginners. Jalapeño and chipotle are in the medium range (2,500-8,000 SHU), ideal for those who enjoy a noticeable but manageable heat. The serrano steps it up (10,000-25,000 SHU) and is the standard in Mexican salsas. The árbol chile (15,000-30,000 SHU) brings direct, clean heat. And at the top, the habanero (100,000-350,000 SHU) is for the brave: use it with great respect and in minimal amounts until you know your tolerance.

Grow your own chiles in the US

You can grow Mexican chiles surprisingly well in the US. Jalapeños, serranos and habaneros do well in pots on a sunny windowsill or balcony from April to October. Buy seeds from specialist online shops, sow indoors in late February and transplant once there's no risk of frost. A well-tended jalapeño plant produces between 25 and 35 chiles per season, enough for months of home-made salsas.