Buckwheat

Buckwheat is a rich source of the amino acid lysine. It contains high levels of protein, calcium, magnesium, phosphorous, B vitamins, and iron.

Because of its name, many people assume that buckwheat is a type of wheat; therefore, it must contain gluten, but this isn't true. Buckwheat, in fact, isn't even remotely related to wheat. It is actually an herb plant related to rhubarb and sorrel, bearing seeds that are used as a grain. It is gluten free; therefore, buckwheat is an excellent wheat substitute for people who are allergic to gluten.