The dinner often consists of foods associated with New England harvest celebrations: turkey, potatoes (usually mashed and sweet), squash, corn (maize), green beans, cranberries (typically as cranberry sauce), and pumpkin pie, but has expanded over the years to include specialties from other regions of the United States, such as pecan pie (the American South) and wild rice stuffing (the Great Lakes region) as well as international and ethnic dishes.

Other Thanksgiving customs include charitable organizations offering thanksgiving dinner for the poor, attending religious services, and watching or participating in parades and American football matches. Thanksgiving is also typically regarded as the beginning of the holiday shopping season. The day following Thanksgiving, Black Friday, is often considered to be the busiest shopping day of the year in the United States. Cyber Monday, the online shopping equivalent to Black Friday, is held on the Monday after Thanksgiving.