Chelsea Milling doesn't advertise its home baking mixes to consumers. Instead, it relies on "our little blue boxes, as we like to call them," says Jack Kennedy, the Chelsea, MI, company's director of manufacturing operations. "The boxes are very much a part of the franchise of the Jiffy mix business."
And what a franchise it is. The company began producing a 40-oz all-purpose baking mix in 1930. Today it makes 19 different mixes on 17 packaging lines at the Chelsea plant, in five rooms, designated A, B, C, D and E. Room E houses four lines dedicated to Jiffy® corn muffin mix, which Kennedy says, "represents roughly 70 percent of our business."















