12. Do you agree? What do foods like pizza, macaroni and cheese, and tacos have in common? They are all Combination foods. There are lots of Combination foods. Combination foods are very nutritious because they're made up of foods from more than one food group. Spaghetti and meatballs topped with cheese is a great example of a combination food. Here's the breakdown: Spaghetti from the Grain Group Tomato sauce from the Vegetable Group Meatballs from the Meat Group Cheese from the Milk Group http://www.nutritionexplorations.org/kids/nutrition-winning.asp