Matzo Stuffed Breast Of Veal

1 large onion, diced
1/2 c. celery, diced
1/4 lb. mushrooms, sliced
2 T. chicken fat
2 T. minced parsley
1 c. matzo meal
3/4 t. salt
dash pepper
1 3/4 c. hot water
1 egg, beaten
1 10-oz. can tomato sauce
1 sauce can water
4 1/2-5 lbs. breast of veal, with pocket
1 t. paprika

Sauté onion, celery and mushrooms in chicken fat. Add parsley, matzo meal, salt and pepper, hot water and egg. Fill veal pocket with mixture. Place in pan and add tomato sauce and water. Sprinkle meat with paprika. Cover and roast 2 1/2 hours at 350°, basting frequently. Uncover for last 1/2 hour. Yield: 6-8 servings.