Papa Rellena is a traditional croquette filled with a spicy ground beef mixture. Ground beef is stir-fried with onions, tomatoes, cumin, garlic and paprika. Hard boiled eggs and black olives are added. Mashed potatoes are molded around a center of the meat mixture and formed like a potatoes. The Papa Rellena then is fried in oil and served with Salsa Criolla, a sauce made of in lime juice, vinegar and oil marinated red onions, yellow Peruivan chilies (aji amarillo) and parsley.