Tangy and salty--Umeboshi is a savory plum pickle made of the fiercely tart ume plum, colored naturally by red shiso leaves. A Japanese meal staple, long regarded as a folk remedy for hangovers and morning sickness. Eat it with steamed rice, add to soups and braises, or use it in sauces. Stronger taste than your usual pickle; a little goes a long way!
It's low in calories yet contains a good amount of vitamins, minerals, antioxidants, and fiber -- giving you the most nutrition bang, not just flavor, for your buck.