What is best source dietary of vitamin k?

The best dietary sources of vitamin K include leafy green vegetables, such as kale, spinach, and Swiss chard. Other good sources are broccoli, Brussels sprouts, and certain vegetable oils like soybean and canola oil. Fermented foods, particularly natto made from fermented soybeans, are also exceptionally high in vitamin K2. Incorporating a variety of these foods into your diet can help ensure adequate vitamin K intake.