Pour tomato sauce into a small saucepan over medium heat. Add spices and stir. In a cup, combine warm water with flour until it forms a paste, then gradually add to tomato mixture while stirring. Let simmer for 10 minutes, to thicken. Cool the sauce then spoon over enchiladas or layered tortillas and cheese, then prepare according to enchilada recipe directions (usually, heat in 425 degree oven for about 15 minutes). Muy bueno!