One of the easiest fermented foods is fermented cabbage, or sauerkraut. It can ferment in its own juice, or in salty water. This video shows you two methods to try in order to get delicious and healthy food, high in vitamin C, that you can enjoy all winter long. I add red cabbage to achieve that deep, beautiful purple color, horseradish to make it last longer and give it spiciness, and quince to give it a fragrant aroma.