Broccoli: Broccoli has been infused with vitamins and minerals. Broccoli is one of the healthiest veggies you can eat, being rich in vitamins A, C, and E, fibre, and several antioxidants. Its strength must be preserved by cooking it as little as possible, or better yet, not at all. According to research from a reliable source, steaming is the best method for preserving more nutrients in food.