Add about 1/4 cup each tomato sauce and ketchup to beef mixture and stir well. Taste to see if if it needs more tomato sauce and/or ketchup. The taste should be a balance of the two, and the mixture should not be dry. The liquid will absorb. I generally use at least half the can of tomato sauce and about the same amount of ketchup. It's a taste as you go type of recipe.