Tlayuda: Oaxaca's Giant Dried Corn Tortilla, Why It Must Be Charred on Both Sides, and the Asiento That Makes It Oaxacan

Tlayuda is Oaxaca's street food landmark — sold throughout the day and into the small hours from tlayuderas (vendors) who keep charcoal braziers burning and produce them to order. The dish embodies Oaxacan identity in the same way that pizza embodies Neapolitan identity or a full English embodies British identity: it is simultaneously everyday food and a regional statement.

The asiento that defines tlayuda is the fat that accumulates at the bottom of a vat of rendering chicharrón (fried pork skin) — it is partially cooked, slightly smoky, mixed with pork crackling fragments, and has a distinctive depth of flavor that standard lard cannot reproduce. Substitutes (refried lard, butter) are acceptable but change the character of the dish.

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The Tortilla

The tlayuda is made from a large corn tortilla that has been partially dried and then cooked over high heat until:

• The edges are completely crispy and cracker-like
• The center remains slightly flexible (it needs to bend slightly to eat without shattering)
• Both sides have visible char marks from the grill

This is different from a fresh soft tortilla (too soft) or a tostada (too brittle). The tlayuda is a specific texture: the edge should snap when broken, the center should flex.

Making at home: Large 30cm corn tortillas are not commonly available outside Mexico. Alternative: use 2–3 standard corn tortillas as a base, or use large flour tortillas (the texture is different but acceptable). Dry them in a 150°C oven 10 minutes, then char both sides on a dry comal or griddle.

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The Toppings

Essential:

• Asiento (substitute: lard or ghee, spread in a thin layer as a base)
• Frijoles negros — Oaxacan black beans, cooked very soft and mashed slightly (not refried but partially mashed)
• Quesillo (Oaxacan cheese) — a stretched, stringy, mild cheese pulled into ribbons (substitute: low-moisture mozzarella, pulled into strings)

Traditional protein choices (one per tlayuda):

• Tasajo — Oaxacan air-dried beef, thinly sliced, briefly grilled
• Cecina — salt-cured pork, thinly sliced, briefly grilled
• Chorizo negro — Oaxacan chorizo, distinct from Mexican chorizo

Finishing:

• Avocado, sliced
• Shredded cabbage
• Tomato
• Chili paste or salsa

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Home Recipe

Serves: 2 | Time: 30 minutes (if beans already made)

Black Beans

• 1 × 400g can black beans (or 200g dried, soaked and cooked until very soft)
• 1 tablespoon lard or oil
• 2 cloves garlic, minced
• Salt, cumin

Heat lard; fry garlic 1 minute; add beans with their liquid; mash roughly; simmer until thickened. Season.

Assembly

1. Char 2 large corn tortillas (or the largest available) on both sides over a gas burner or under a very hot broiler until edges are crispy and center is still slightly flexible.

2. Spread a thin layer of lard or asiento over the tortilla surface.

3. Spread the warm black beans in a thin layer over the lard.

4. Add pulled mozzarella (or quesillo) over the beans.

5. Grill the protein (tasajo, cecina, or a slice of grilled steak) separately; place on the tlayuda.

6. Top with avocado slices and shredded cabbage. Serve immediately — the crunchy edges are best in the first few minutes.

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Related reading: Enchiladas Mexican Guide | Mole Negro Oaxacan Guide | Tamales Mexican Corn Masa Guide