Next is the perennial, burger-topping iceberg lettuce. You'll need 33 cups of ... This pretty red and green leaf is chard. And it's a powerhouse. We're talking 300% of your daily vitamin K.

Dark leafy greens—including lettuce, kale and spinach,—are good ... Related: Romaine Salad With Grapefruit, Avocado and Goat Cheese This green has a bold, peppery flavor and is typically ...

Watercress is a dark green leafy vegetable with round, tender leaves and crisp, hollow stems that grows rapidly in shallow water and rushing streams. Technically, it is a semi-aquatic plant and a ...

dark green leaves and a slightly bitter taste, it's a staple in Caesar salads. Butterhead Lettuce: Its soft, buttery leaves have a mild flavor, making it a favorite for salads. Leaf Lettuce ...

This dark green, leafy vegetable tastes kind of peppery and ... Now that is a fast food we can recommend! Use it instead of lettuce on sandwiches or get creative and put it in a fruit smoothie.