Blood Type A Menu. On the blood type diet, a good breakfast if you're type A is whole-grain cereal, such as steel-cut oatmeal, along with fresh mixed fruit. Typical snacks for type A are foods such as fruit, nuts, seeds, rice cakes and peanut butter.For lunch, it's typical to have a large, hearty salad with lots of fresh vegetables.he Blood Type Diet Premise. D’Adamo theorizes that your blood type provides a distinctive marker for which foods are best for you, based on the diet of your ancestors with the same blood type. This means a nutritious diet for one blood type may include different foods than a nutritious diet for another blood type.