How to make
The leg is deboned and salted everywhere. Let it sit while you boil the livers, then cut them into small pieces. In the butter, saute half the onion, mushrooms and livers.
Add the black pepper, spearmint, parsley and vegetable mix. Leave all this to saute. Stuff the prepared filling into the leg and sew it closed. Smear the top with the remaining butter and egg yolks and wrap in the caul fat.
Bake in a moderate oven for about 2 hours, surrounded by the other products. Pour on 1 cup white wine and 2 cups warm water.