Modena pig’s trotters ragù boccolotti
Ingredients for 4 persons: 300 gr of Boccolotti Filotea ; ½ pig's trotters ; 1 stick of celery ; 1 onion ; 1 carrot ; 1 sprig of parsley ; 250 ml of tomato sauce ; ½ glass of white wine ; grated Parmigiano Reggiano