Superfood.  What a trendy word.  It represents a food that is chock full of vitamins.  Broccoli, kale, and spinach are examples.  Eat them regularly.  Flavor them with herbs and balsamic.  Even kale, a tough, bitter leaf, can taste good with some olive oil and garlic. Just try not to cancel out these healthy foods with caloric dressings and rich/heavy sauces too often.