Mom's Meat Patties in Sweet Sour Sauce

This turned out to be a keeper from my Mom's recipe box.

2 cups soft bread crumbs

1/4 cup onion, chopped

1 teaspoon salt

1 teaspoon sage

1 pound ground beef

1/2 cup water

1/4 cup vinegar

1 cup onion, chopped

1/4 cup brown sugar

1 tablespoosn flour

2 tablespoons water

2 teaspoons mustard

Combine crumbs, 1/4 cup onion, seasonings and 1/2 cup water. Let stand 5 minutes. Add meat. Shape into patties and brown. Cover with 1 cup onion. Combine brown sugar, flour, vinegar, 2 tablespoons water and mustard. Pour over meat. Cover and simmer 35 minutes.