Gerber Graduates Puffs Blueberry flavor are light, easy to dissolve snacks made from puffed cereal grains and real fruit, in a shape and size just right for little fingers. Puffs are a snack you can feel good giving your toddlers, because they are made with whole grains and are a good source of iron and zinc. It's a quick snack that isn't just convenient it's nutritious.