Semitas Potosinas Seculares

San Luis Potosí, especially the Altiplano and the ranch towns north of the capital, is where this semita lives. Not Puebla's cemita. Not a bolillo with bran thrown in. This is pan de rancho: wheat flour, salvado de trigo, manteca de cerdo, a little piloncillo, and a dry oven that leaves a firm crust and a crumb meant to last.

The ingredient that tells the truth is the salvado. In the Altiplano potosino, wheat passed through hacienda mills and nothing useful was treated like waste. Bran gave body, flavor, and keeping power. The women baking for merienda knew how to make bread that could sit wrapped in a servilleta and still be worth eating the next morning with frijoles de olla or café de olla.

Rub the manteca into the flour and bran before the water goes in. That is the hand of the recipe. It shortens the crumb and gives the semita its sandy, satisfying bite. If you want a shiny open crumb, make bolillos. If you want semitas potosinas, keep the dough firm and the oven dry. Cada estado, su propia cocina.