Advertising Age reported that some East Coast grocery stores were running out of Velveeta cheese. Kraft tells USA Today says it was a short-term, seasonal issue. But at least one observer says that can't be the problem. "It's not a seasonal product," says Ken Albala, a culinary historian who teaches a class on "History of Food" at University of the Pacific in Stockton, Ca. "There is no dish served between Thanksgiving and Christmas that is quintessentially Velveeta."