My mom didn't use Ketchup. She used 1 can tomato sauce, 2 tbsp. ground onion (actually 1/2 onion) 1/4 teaspoon each thyme, nutmeg, celery seed, allspice, and chili pepper - boil and pour over meatloaf. Her recipe also included 1/4 teaspoon mace, but she never had any. I think this was grandma's recipe. Maybe I should make meatloaf sometime. My sister does, in the microwave nowadays.