14 oz (400 g) shrimpSalt and black pepper, to taste8 1/2 cups (2 liters) fish or shrimp stock1/2 cup (1 stick) unsalted butter1/2 onion, finely chopped1 garlic clove, minced1/2 red chili pepper, finely chopped1 cup (5.3 oz / 150 g) diced, seedless tomatoes1 cup (7 oz / 200 g) Arborio or similar1/4 cup (2 fl oz / 60 ml) dry white wine2.5 oz (70 g) grated Parmesan cheeseChopped fresh parsley, to taste