Rognoni trifolati is a traditional offal dish that's especially popular in Emilia-Romagna. The dish is usually made with a combination of veal or sheep's kidneys, olive oil or butter, parsley, lemon peel, salt, pepper, and a bit of Marsala. The kidneys are skinned, cut, and placed into a combination of boiling water and lemon juice.

They are then drained, cut into slices, and cooked in olive oil or butter with grated lemon peel and seasonings. Once the kidneys become tender, the Marsala is added to the pan until it reduces to half of its volume. Rognoni trifolati are traditionally served sprinkled with heaps of chopped parsley.