There are more than 850,000 “retail” foodservice establishments—restaurants, schools, offices, vending machines, hospitals, sports arenas, quick-service outlets, etc.—in the United States, serving more than $1 billion worth of food daily. Away-from-home eating constitutes nearly half of the more than $800-billion retail value of all foods consumed in the U.S. today. And at the present 4% rate of growth, foodservice will represent nearly the sole source of growth in the food industry in this deca…