Turmeric has been used in India for thousands of years as a spice and medicinal herb. Not only is it an excellent source of both iron and manganese, it’s also a good source of vitamin B6, dietary fiber, and potassium. Curcumin, the compound in turmeric responsible for that bright hue, is a very strong antioxidant and is said to have powerful anti-inflammatory effects as well as a host of other health benefits. It has a peppery, warm, bitter flavor and a mild fragrance slightly reminiscent of orange and ginger. While it is best known as one of the ingredients used to make curry, it’s also often used to give mustard its bright yellow color. Add this superfood to any juice or smoothie for just $1.