14 oz (400 g) pork or beef liver (iscas)7 oz (200 g) onion, sliced into half-moons6 garlic cloves, sliced into slivers4 bay leaves3.4 tablespoons (0.5 dl) of cooking oil1 heaping tablespoon of solid lardFreshly ground black pepper, to taste3.4 tablespoons (0.5 dl) of white wine3 chopped chili peppers, seeds removed1/4 teaspoon of ground rosemarySalt, to taste