Preheat oven to 300 degrees.Cook rump roast in 9 x 9" pan for 25 to 30 minutes or until internal temperature in meat is 150 to 170 degrees. Mix and sift flour and salt.Add milk to make a smooth paste.Then add eggs, beat 2 minutes in electric mixer. Cover bottom of 9 x 9" pan about 1/4" with drippings from roast. Pour mixture 1/2" deep on drippings in pan.Bake 20 to 30 minutes. Delicious when served.