Meanwhile, heat a 12-inch cast-iron skillet. Add the chorizo, break it into chunks with a wooden spoon and cook over moderate heat, turning, until cooked through and lightly browned, about 8 minutes.

2. Add the chorizo and tomato paste, using a wooden spoon to break up the chorizo. Cook until the chorizo is cooked through and beginning to brown, another 3 minutes.

Potato, Chorizo and Feta FrittataFrom “Favorite Food at Home: Delicious Comfort Food From Ireland’s Most Famous Chef,” by Rachel Allen. Makes 8 servings. Ingredients 9 ounces (about 2 medium ...