1 pork tenderloin, about 1 poundSalt (to taste)3 teaspoons of pepper sauce, preferably homemadeGround cumin (to taste)1 sprig of fresh rosemaryMixed peppercorns (to taste)4 tablespoons of olive oil3 shallots, thinly sliced3 cloves of garlic, minced2 bay leaves150 ml of white wine1 heaping tablespoon of butterOil or olive oil for frying3 medium potatoes, cut into thick sticks for frying