When eating ketogenically, you will eat protein, fat, and low-carb vegetables and fruit. Grains are off the table, as are most sweeteners (though there are some exceptions). Some fruit (berries), starchy vegetables (usually root vegetables), legumes, and nuts are limited, as are full-fat cheese and cultured dairy products (though for different reasons). Leafy, high-fiber vegetables are eaten in abundance with moderate servings of protein.