The Eastern Idaho region grows most of Idaho's potato crop, making it one of the world's most productive potato-growing areas. Barley for beer production is also significant. Several major breweries, including Coors, Anheuser-Busch and Mexico's Grupo Modelo have barley producing operations in the area. Sugar beets, alfalfa and wheat are also major crops. There are also many cattle ranches for raising beef.\n\nAnswer this question based on the passage: where are most of the potatoes grown in idaho?
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To answer the above question, the relevant sentence is: The Eastern Idaho region grows most of Idaho's potato crop, making it one of the world's most productive potato-growing areas.
So, the answer is The Eastern Idaho region.
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