Final answer:
While there is no specific region known predominantly for the production of mashed potatoes, Idaho and Washington are the top potato-producing states in the US. These regions supply the raw material for mashed potatoes and other potato-based products.
Step-by-step explanation:
Mashed potatoes, as a processed product, do not have a specific production region. However, the raw material, potatoes, are largely produced in states like Idaho and Washington in the United States.
While mashed potatoes themselves are prepared in various locations across the country, the main ingredient, potatoes, are largely cultivated in particular regions. The state of Idaho is known as the largest potato producer in the United States due to its optimal growing conditions, including volcanic soil and a favorable climate. The close second is Washington State, which also contributes significantly to the national potato output.
These potatoes are then distributed to various food processing facilities where they can be turned into mashed potatoes and other products. Although the Midwest and Great Plains, including states like North Dakota, are traditionally known for grain production, these regions are not primarily associated with potato farming. It's worth noting that agricultural practices and crop distribution can change over time due to factors like market demand, technology, and crop prices.