Papas Gratinadas con Rajas Sinaloenses

This is a northern dish. Sinaloa, specifically, where the Pacific coast meets cattle country and the kitchens look more like Sonora than like Oaxaca. Crema, queso Chihuahua, and manteca de cerdo are the fats of the north. If you grew up in Culiacan or Mazatlan eating Sunday comida with your family, you know this gratin sat on the table beside the roast, the frijoles puercos, and a basket of hand-pressed flour tortillas.

The rajas are the dish. Charred poblano, peeled clean, cooked in manteca with onion and garlic until the smoke and the fat marry. Skip the open-flame char and you have steamed pepper. The whole point of rajas is the smoke pulled into the flesh. If you have a mesquite grill, use it. If not, the open burner on a gas stove will get you most of the way there.

People outside Mexico see a gratin and assume it must be French, or worse, that the Mexican version is somehow a copy. It is not. The northern Mexican kitchen has been baking layered dishes in cazuelas with crema and queso for over a century, and the technique is its own thing: lighter than the French version, built on the brightness of poblano and the tang of crema, not on butter and gruyere. La manteca es el sabor. Cada estado, su propia cocina.

My mother did not make this. She was from Jalisco and Jalisco cooks differently. I learned this gratin from a senora named Imelda in a kitchen in Culiacan in 2014, the third week of my Sinaloa trip. She wrote nothing down. She showed me with her hands. The notebook entry I keep is mine, copied from watching her, corrected over the next three Sundays she let me back in her kitchen.