kasha

n. porridge made from cooked grain (especially buckwheat); buckwheat or any other edible grain; light lining that resembles flannel (Textiles)

Kasha is a porridge made with wheat, buckwheat, oats, millet, rice, potatoes, etc. It is one of the oldest known meals in Eastern European cuisine, at least a thousand years old, and second in historical significance only to bread.[1]
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Noun
1. boiled or baked buckwheat
(hypernym) hot cereal

n. kasha, porridge made from cooked grain (especially buckwheat); buckwheat or any other edible grain; light lining that resembles flannel (Textiles)

Buckwheat grouts.