Looking to make some healthier choices when it comes to summer snacking? Look no further than your local pistachio. If you haven't already been hip to this high-powered nut, here is some intel you may find interesting. For starters, they've just been recognized as a complete protein for those 5 years and older, meaning they contain all 9 essential amino acids, the building blocks that make up protein that your body can't produce on its own and must get from food.