Homemade masa dough might sound intimidating, but doesn't have to be: prepackaged masa harina, the coarse flour ground from hominy that's already been slaked with lime in the traditional manner, makes its preparation a snap. Enriched with lard and lightened with baking powder, the dough makes a flavor-packed base for a variety of dishes, including mexican tacos, gorditas, and sopes, as well as salvadoran pupusas.