What do you call a seller of butter egg and bacon?

A seller of butter, eggs, and bacon would typically be referred to as a "provisions merchant" or a "purveyor of dairy and meat products." In a more colloquial sense, they could also be called a "dairy and butcher vendor" or simply a "grocer" specializing in these specific products. The term "provisions merchant" historically encompassed a wide range of food items, including staples like butter, eggs, and bacon.