Mustard greens (Sarson ka Saag) are the peppery leaves of the mustard plant and are incredibly nutritious. They’re particularly high in vitamin K, vitamin C, and plant compounds that may have antioxidant and anticancer effects. Additionally, incorporating mustard greens into your diet may be beneficial for heart, eye, and immune health. With their peppery, spicy flavor, mustard greens are a delicious addition to salads, soups, or casseroles. They can also be steamed and tossed with olive oil, garlic, and lemon juice for a simple side dish.