Rioja chorizo and potato stew

Name: Rioja chorizo and potato stew
Prep time: 15 min
Cook time: 40 min
Total time: 55 min
Cuisine: Spanish
Ingredients: 2 dried red peppers (pimientos choriceros); olive oil for frying; 1 green pepper, finely chopped; 1 large onion, finely chopped; 1 leek, finely chopped; 1 head garlic, left whole; 1 dried red chilli, halved; 3 large potatoes, peeled and cut into irregular pieces; 1 chorizo sausage (mild or spicy), sliced