Pound veal (thin Italian slices) between 2 pieces of waxed paper. Put a thin slice of prosciutto and a thin slice of Swiss cheese between 2 slices of veal (like a sandwich). Dip the whole sandwich in egg, slightly beaten with 1 tablespoon water, then in grated Parmesan cheese combined with white pepper. Refrigerate 20 minutes.
Saute slowly uncovered about 15 minutes in 1/2 oil and 1/2 butter. Remove meat. Add wine and bring to a boil. 1 pkg of 4 slices veal makes 2 good size sandwiches. 1 sandwich is enough meat for a one person serving.