Nopales Asados con Cebolla

Ciudad de México, the southern alcaldía of Milpa Alta. That is where this dish lives. Not in the glass towers, in the nopal fields climbing the old volcanic soil toward the edge of the city, where the mercado sells paddles still crisp enough to snap when you bend them.

Nopales asados are not complicated, but don't confuse that with careless. You clean the paddles, score them lightly, salt them, and put them on a hot comal until the green turns olive and the surface blisters. The onion goes beside them, cut thick, allowed to char. That black edge is flavor. The slime cooks off. The flesh softens. The cactus tastes like itself.

I learned this version from a woman in Milpa Alta who sold nopales by the kilo and corrected every customer who asked for the smallest paddles. For salad, yes. For the comal, no. You want medium paddles, firm and meaty, so they don't collapse before they blister. Pregúntale a las señoras del mercado. They know before the cookbook knows.

Serve them with lime, sal de grano, and salsa de chile serrano from the molcajete if you want heat. If you don't, leave the chile alone. Not all Mexican food is a dare. This is a 32-state cuisine, and this plate belongs to the central highlands, where cactus is daily food, not decoration.