Depending on your needs and preferences, you may have to avoid the following foods on a vegetarian diet: Meat: Beef, veal and pork Poultry: Chicken and turkey Fish and shellfish: This restriction does not apply to pescetarians. Meat-based ingredients: Gelatin, lard, carmine, isinglass, oleic acid and suet Eggs: This restriction applies to vegans and lacto-vegetarians. Dairy products: This restriction on milk, yogurt and cheese applies to vegans and ovo-vegetarians. Other animal products: Vegans may choose to avoid honey, beeswax and pollen.