Trim all fat from the tripe. Put the tripe in a pot of cold water and bring it to a boil. Simmer 5 minutes. Drain and rinse in cold water. Cut the tripe into 1½-in. (4-cm) squares.
Cut the feet into pieces with a meat saw as necessary so they fit into the braising pan.
Combine all the ingredients, except the Calvados, in a braising pan or other heavy