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Cuitlacoche Estilo Costeño

A deeply savory, earthy filling from the Oaxacan coast built around cuitlacoche — the blue-black corn fungus (Ustilago maydis) that swells on ears of field corn during the rainy season. Kennedy presents the costeño approach as notably direct: no tomato, no onion, no long mole-style construction. The fungus is ground raw with garlic, toasted dried chiles, and epazote, then fried down into a concentrated, almost meaty paste. The result is intensely umami-forward, with the smoke of the toasted chiles sharpening the fungus's characteristic mushroom-and-corn depth. Costeño chiles (Capsicum annuum) are the preferred choice along that coastal corridor; chiles de árbol carry similar heat and work as a practical stand-in. This paste is used cold, packed into fresh masa empanadas before they are pressed and toasted or fried.

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Servesenough filling for approximately 12–16 empanadas
Sourced0of 3 in BC
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I

The Market List

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450 g (1 lb / ~1 liter / 4 cups)
cuitlacoche, shaved from the cob and roughly chopped
Not yet stocked in British Columbia
2
garlic cloves, roughly chopped
Your own market
3
costeño chiles or chiles de árbol, toasted whole and crumbled
Not yet stocked in British Columbia
2 tablespoons
epazote leaves, roughly chopped
Not yet stocked in British Columbia
2 tablespoons
vegetable oil
Your own market
Salt to taste
Your own market
II

The Method

1
Toast chiles in a dry skillet over medium heat, turning, until fragrant — about 60 seconds per side. Cool, then crumble.
2
Combine cuitlacoche, garlic, crumbled chiles, and epazote in a food processor. Pulse to a finely textured, cohesive paste.
From the canon — Epazote (Dysphania ambrosioides) is one of Mexico's defining culinary herbs — a pungent, aromatic annual with a distinctive smell sometimes described as petr… Epazote — identification and usage →
3
Heat oil in a heavy skillet over medium-high heat until shimmering (~180°C / 355°F).
4
Add the paste and fry, stirring constantly, for 10–15 minutes. The mixture should become moist and concentrated but not juicy or dry.
5
Season with salt. Spread onto a plate or tray and cool completely before using as empanada filling.
III

Sensory Tests

◇Press a small amount of finished filling between two fingers: it should hold together as a cohesive, slightly tacky paste and leave a faint dark stain rather than releasing watery liquid — excess moisture signals under-reduction.
◇Smell the paste directly off the heat: the dominant note should be earthy fungal depth with a clear resinous chile smoke underneath; if the chile aroma has vanished or turned acrid, the costeño chiles were either over-toasted before grinding or scorched in the pan during frying.
◇Taste a pinch before filling the empanadas: the salt and umami should feel complete with no raw, beany aftertaste from the epazote — if that green rawness lingers, the filling needs another minute over heat.
◇Where it lives or dies. The dish lives or dies in the reduction: the raw paste must be fried down in lard over steady medium heat — roughly 160–175 °C (320–350 °F) at the pan surface — until it loses half its volume and shifts from a loose, wet slurry to a dense, cohesive mass that pulls cleanly away from the sides of the pan. Pull it even two minutes too early and the filling steams inside the empanada, turning the masa gummy; push it two minutes too far and the fungal volatiles that carry the mushroom-and-corn depth simply cook off, leaving only heat and salt.
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V

What to Pour

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The paste smells of rain-wet corn and forest floor, with a sharp, resinous smoke from the toasted costeño chiles cutting through the fungus's heady, mineral richness. On the palate it is dense and almost meaty — glutamate-saturated in the way of a long-reduced broth — with epazote's piney, slightly medicinal edge arriving in the finish. As the filling sets in the pan it tightens into something closer to a concentrated tapenade than a sauce, coating the mouth with a lingering, earthy warmth.

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