As part of BOM BOM's nutrition programme, you have the option to choose Rotate Offals under the Standard Plan for nutritional completeness if your pet's allergies are fully ascertained. Otherwise, you also have the option to select Fixed Offals where the offal type used in meals will match the same protein selected for muscle meats (where available), thus minimizing triggering any unknown protein allergies. This is a recommended option to facilitate diet elimination due to allergies or any other dietary challenges/restrictions.