Not all meatballs are low FODMAP. FODMAPs are types of carbohydrates that certain individuals may find difficult to digest. Regular meatballs that are frozen often contain onions and garlic, which are high in FODMAPs. However, meatballs made without these ingredients or replaced with a low FODMAP option like leek leaves (for onion) and garlic-infused oil (for garlic), can make the meatballs suitable for a low FODMAP diet.