The diet requires consuming no more than 800 calories per day. Eat foods that are low in carbohydrates and calories and high in protein. People who follow the grapefruit diet can prepare their food however they like, including seasonings, salad dressings, or butter. Examples of meals include: Breakfast: two hard-boiled eggs, two slices of bacon, and 1/2 grapefruit or 8 ounces of grapefruit juice Lunch: salad with dressing, any amount of meat, and 1/2 grapefruit or 8 ounces of grapefruit juice Dinner: any meat prepared in some way, salad or red and green vegetables, coffee or tea, and 1/2 grapefruit or 8 ounces grapefruit juice. Bedtime snack: 8 ounces of skim milk.