Mom's Brisket

1 1/2 cups soy sauce

1 cup white vinegar

2 tablespoons catsup

2 teaspoons paprika

2 cloves garlic -- crushed

1/2 cup coarsely ground pepper

Combine soy, vinegar, catsup, paprika and garlic with a wire whisk. Place 4-10 lb. brisket in an oven cooking bag and cover with pepper. Pour marinate over and refrigerate overnight. Bake in baking bag at 350 for 3-4 hours.