Moronga, rellena, or morcilla is a sausage made of pig's blood. It is found in Cuba, Puerto Rico, Central America and Mexican cuisine. Spices, herbs (such as ruda, oregano, and mint), onions and chile peppers are added and then boiled in the pig's intestines for several hours. It is served in a sauce, either "chile rojo" or "chile verde". Considered a delicacy, it is also served in Mexico as a filling in gorditas after it has been pan-fried with fresh onions and jalapeño peppers.