Salsa de Chile Chocolate del Istmo

This is a salsa from the Istmo de Tehuantepec, the narrow strip of Oaxaca where the Pacific almost reaches the Gulf and where the women of Juchitán, Tehuantepec, and Salina Cruz run the markets, the kitchens, and most of the politics. The salsa belongs to them.

The chile that defines it is chile chocolate del Istmo. Not chocolate the candy. Chocolate the color, dark, wrinkled, with an aroma that pulls cocoa, dried tobacco, and old earth out of a single dried pod. It is part of the chilhuacle family but it is its own chile, grown in small quantities by farmers around the Istmo and dried in the sun on petates. If your chile vendor does not know what state your chile came from, you do not have the right chile. This is the kind of ingredient that disappears if cooks stop asking for it. So ask for it.

The technique is straightforward and unforgiving. Toast the chile light, soak it in hot water, char the tomato and onion on the comal, grind everything on a metate or in a molcajete, and finish in lard. There is no shortcut that does not change the dish. A blender pulse is acceptable. A blender puree is not. Smooth is the wrong texture. This salsa should hold the shape of a spoon and stain the plate.

My mother never made this salsa. Jalisco does not have chile chocolate. I learned it from a senora named Doña Berta at the Mercado Jesús Carranza in Juchitán, who watched me try to peel the tomatoes after charring them and corrected me without raising her voice. The skin is the reason the salsa is dark, she said. Leave it alone. I wrote that in the margin of my notebook. Cada estado, su propia cocina, and inside Oaxaca, the Istmo is its own world.