What did colonial millers trade?

Colonial millers primarily traded flour and meal produced from grains such as wheat, corn, and rye. They often exchanged these products with local farmers and merchants for other goods, including grains, livestock, and sometimes even cash. In addition to flour, millers might also provide services like grinding for farmers, who would pay with a portion of their harvested grain. This barter system helped sustain local economies and facilitated trade in colonial communities.