Kraft’s one-million-square-foot plant in Upper Macungie Township, Allentown, PA, employs just under 300 people. The plant holds the sole production line for Grey Poupon mustard and A-1 Steak Sauce, and also packages Kraft’s natural cheese products. Until 2007, the plant also produced process cheese, until the introduction of new, more efficient machines allowed Kraft to consolidate its process cheese operations to three mid-western plants.