Sauerkraut, a staple of German cuisine, is one of the most popular examples of fermented food. It's rich in probiotics and an important source of calcium, phosphorus, potassium, and Vitamin K. Apart from boosting your immune system and promoting digestive health, sauerkraut may also help you reduce allergies and inflammation by preventing autoimmune reactions. Go ahead to the next slide to learn how to make it at home!