In the United States, although buckwheat is mainly used for animal feed, buckwheat cake was once a special breakfast item and buckwheat flour is also an ingredient of some pancake mixes.
Modern buckwheat food products include buckwheat dried noodles or vermicelli, instant noodles, spaghetti or macaroni, biscuits, breads, cakes, pastry, breakfast cereals and snacks, vinegar, drinks and beverages (tartary buckwheat tea, buckwheat beer, and liquor). Most of these products, particularly made from tartary buckwheat, are popular healthy foods in China. Tender buckwheat shoots are used as fresh vegetables, and are also processed into canned vegetables.
References: https://www.sciencedirect.com/science/article/abs/pii/B0127654909000227
