Always do your best to choose organic buckwheat or kasha. Organic buckwheat tend to contain more nutrients and fewer pesticides. Most natural foods stores carry buckwheat. Be sure to check their bulk section first.
Buckwheat is high in rutin, a flavonoid that protects against disease by strengthening capillaries and preventing blood clotting. Coupled with its high levels of magnesium (one cup cooked provides over 20 percent of the Daily Value), which lowers blood pressure, buckwheat is truly a heart-healthy food. Buckwheat is completely gluten-free and suitable for those with celiac disease. Although you can store buckwheat in a cool, dry place for a short amount of time, it is best to keep it in the refrigerator, where it will last up to three months, or in the freezer, for six months.