... sent it as a gift to this country. Spinach is known as a rich source of iron and ... to the USDA, a 180 gram serving of boiled spinach contains 6.43 mg of iron, whereas one 6 ... ground hamburger patty contains at most 4.42 mg. Spinach still has a large nutritional value, especially when fresh ... , steamed, or quickly boiled. Spinach is an excellent source of vitamin K, vitamin A, ...