Calçots are mild, sweet onions from Valls in Catalonia. They’re cooked over fire until completely blackened, then wrapped in newspaper to finish cooking in their own steam. Traditionally, calçots would be consumed at a calçotada - a winter food festival where people come together to eat lots of the onions straight after they are harvested, with grilled meats and plenty of wine. 

Peel away the black skin of the calçots to reveal the sweet onion inside, then eat! It is a messy business but a lot of fun.