Every year, Jack Link's South Dakota factory turns almost 100 million pounds of meat into beef jerky, the go-anywhere snack and preferred outer space protein among NASA astronauts. At a century-old Louisiana refinery, mountains of raw sugar are cleaned and steamed into dainty Domino sugar cubes by the millions. Brownies were originally a culinary mishap, and at this New Jersey factory they're so popular they're baked in a Ferris wheel-style oven and chopped by a robotic knife.
