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Rajas de Chile de Agua

Rajas de Chile de Agua

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Oaxaca's most quiet side dish: thin strips of chile de agua roasted over flame, peeled, and tossed with white onion and lime. Served next to tasajo, asi se hace y punto.

Side Dishes
Mexican
Weeknight
BBQ
Dinner Party
15 min
Active Time
15 min cook30 min total
Yield4 servings as a side

This is from Oaxaca. Specifically from the Valles Centrales, the broad valley around Oaxaca city where the chile de agua grows and almost nowhere else does. The chile gives the dish its name and its identity. Without chile de agua, you do not have rajas de chile de agua. You have rajas of something else.

Chile de agua is light green, conical, with thin walls and a clean, grassy heat that fades fast. It is one of the few fresh chiles in Mexico that is genuinely regional. You will not find it in Mexico City unless someone trucked it up that morning, and you will not find it outside Mexico unless someone is importing it specifically for the diaspora. When the season is on, from late spring through early fall, the chile vendors at the Mercado de Abastos and the Mercado 20 de Noviembre stack them in pyramids and you buy them by the kilo and you eat them all week.

The technique is simple, which is why everything depends on the chile and the roast. You blister the skin over open flame, sweat them under a cloth, peel them with your fingers, cut them into strips, and dress them with onion, lime, and salt. Some cooks add a spoon of melted manteca. Some sprinkle sal de gusano on top. The senoras at the comedores in Tlacolula will tell you they have been doing it this way for as long as they can remember and that is the only authority this recipe needs.

This is what you eat next to tasajo. The thin-sliced beef gets grilled over charcoal, the rajas go in a clay dish in the middle of the table, the tortillas come off the comal one by one, and you build your taco with whatever salsa is already on the table. My mother never made rajas de chile de agua because she was from Jalisco and you cannot get the chile there. The first time I ate it was in a comedor in Tlacolula on a Sunday, and I understood within two bites why the dish does not need anything else. Cada estado, su propia cocina.

Chile de agua (Capsicum annuum) is a landrace chile cultivated almost exclusively in Oaxaca's Valles Centrales, particularly around the towns of Ejutla, Ocotlan, and Zimatlan, where the volcanic soil and high-altitude valley climate produce a chile with thin walls and a distinct grassy flavor profile that has resisted commercial cultivation elsewhere. The dish is a direct extension of the pre-Columbian Zapotec practice of roasting fresh chiles on the comal and dressing them with salt and lime, a method documented in 16th-century colonial accounts of Oaxacan markets. Rajas de chile de agua remains one of the clearest examples of how a single regional ingredient defines a dish so completely that no substitution survives translation, and it is a fixture of the traditional Sunday tasajo plate in the Valles Centrales.

The technique, the tradition, and the story behind every dish.

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Ingredients

fresh chile de agua

Quantity

8

whole, unwashed until ready to roast

white onion

Quantity

1 medium

sliced into thin half-moons

fresh lime juice

Quantity

2 tablespoons (about 2 limes)

manteca de cerdo (pork lard) (optional)

Quantity

1 tablespoon

melted

flaky sea salt or sal de gusano

Quantity

1 teaspoon

oregano de monte (optional)

Quantity

a pinch

fresh leaves

hand-pressed corn tortillas (optional)

Quantity

for serving

warmed on a comal

tasajo or cecina (optional)

Quantity

for serving

grilled over charcoal

Equipment Needed

  • Cast iron comal or gas burner with open flame
  • Long metal tongs for turning the chiles
  • Clay or ceramic bowl with a plate to cover for sweating
  • Sharp paring knife

Instructions

  1. 1

    Find the right chile

    This dish is chile de agua. Not poblano. Not Anaheim. Not Hatch. Chile de agua is the light-green, slightly translucent, conical chile grown in the Valles Centrales of Oaxaca and almost nowhere else. It has thin walls, a clean grassy heat, and a flavor that disappears the moment you swap it for something else. If you cannot find chile de agua at a Oaxacan market or a specialty importer, do not make this dish today. Make something with the chiles your mercado is actually selling. No me vengas con atajos.

    At the Mercado de Abastos in Oaxaca city, the chile de agua vendors stack them in pyramids by size. Pick the medium ones. The big ones look impressive but the skin is tougher and the flesh is thinner.
  2. 2

    Roast over open flame

    Set the whole chiles directly over the flame of a gas burner, or on a very hot comal, or under a broiler. Turn them with tongs every minute or so. You want the skin to blister and blacken in patches across the entire chile, not to ash completely. The flesh underneath should soften but still hold its shape. This takes about six to eight minutes. The kitchen will smell green and a little sharp. That is the chile telling you it is ready.

  3. 3

    Sweat and peel

    Transfer the roasted chiles to a bowl and cover with a plate or a clean kitchen towel. Let them sit for ten minutes. The trapped warmth loosens the skin from the flesh. Do not skip this. Trying to peel a chile straight off the flame is a fight you will lose. After ten minutes, rub the skins off with your fingers. A few stubborn black flecks are fine. Do not rinse the chiles under water. Water washes away the smoke flavor that the roast just put there.

  4. 4

    Cut into rajas

    Slit each chile lengthwise with a paring knife. Open it like a book. Pull out the stem and scrape out the seeds and veins with the back of the knife. Slice the chile into long strips about a quarter-inch wide. These are your rajas. Some cooks in Oaxaca leave a few seeds in for extra heat. That is up to you and your guests. Asi se hace y punto.

    Wear gloves if your hands are sensitive. Chile de agua is not as hot as serrano, but the oils still linger and you will regret rubbing your eye three hours from now.
  5. 5

    Dress at the last moment

    In a clay bowl or a wide cazuelita, combine the rajas with the sliced onion. Pour over the lime juice and the melted manteca if you are using it. The lard rounds the dish out and ties it to the rest of the meal, but if you are serving rajas next to something already rich, leave it out. Sprinkle the salt and a few leaves of oregano de monte over the top. Toss with your hands. Let it sit for five minutes for the onion to soften and surrender its sharpness.

  6. 6

    Serve with tasajo

    These rajas have one job. They go next to grilled tasajo or cecina, with warm tortillas and a small salsa, on a Sunday in Oaxaca. That is the meal. Pile the rajas in a clay dish at the center of the table and let people build their own tacos. The contrast of the smoky thin-sliced beef and the bright sharp chile is the whole point. Recetas probadas y garantizadas.

Chef Tips

  • Chile de agua is seasonal and regional. Outside of Oaxaca, your best chance is a specialty Mexican grocer or a farmers market vendor with Oaxacan connections during late spring through early fall. If you cannot find them, wait. Substituting a poblano or an Anaheim gives you a different dish entirely, not a compromise version of this one.
  • Roast over real flame whenever possible. A gas burner or a wood fire gives the chile a smoke that a broiler cannot match. If you only have an electric stove, use a very hot dry comal and accept that the result will be slightly different.
  • Sal de gusano, the smoky worm salt from Oaxaca, finishes this dish the way it is finished in the comedores at Tlacolula. If you have it, use it. Flaky sea salt is the second-best option.

Advance Preparation

  • The chiles can be roasted, peeled, and cut into rajas up to four hours ahead and held at room temperature, covered.
  • Do not dress them with the lime, onion, and salt until thirty minutes before serving. The lime breaks down the chile flesh and turns the rajas soggy if it sits too long. This is a dish that wants to be eaten the day it is made.

Frequently Asked Questions

Nutrition Information

1 serving (about 90g)

Calories
65 calories
Total Fat
3 g
Saturated Fat
1 g
Trans Fat
0 g
Unsaturated Fat
2 g
Cholesterol
3 mg
Sodium
575 mg
Total Carbohydrates
8 g
Dietary Fiber
2 g
Sugars
3 g
Protein
2 g

Note: Chef personas and recipes are created with AI assistance. Cook with care: follow safe food-handling practices, check doneness with a thermometer when needed, and adapt for allergies and your kitchen.

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