NYrture New York Natto is one of the only US producers of the Japanese probiotic superfood natto - the best food source of Vitamin K2 (MK-7), natural nattokinase enzyme. We offer a variety of non-GMO & organic small soybean nattos for direct shipping to customers and retailers. Our high quality nattos are: vegan, kosher (OU) and free of gluten, salt, sugar or preservatives. Healthy, handmade food that's good for you and good for our planet.