 The buñuelo, a fried dough ball popular in Central America and Greece, is a popular deep-fried snack and street food in South America.Picarone, a Peruvian dessert originated in the colonial period, are deep-fried cakes made with pumpkin and sweet potatoes, popular in Peru and Chile, especially during harvest festivals.Deep fat frying involves heating oil to temperatures in excess of 180 °C in the presence of moisture and air.