James Salisbury, Sony told them, believed that diarrhea, which was rampant among Union soldiers during the war, could be curtailed by consuming coffee and ground beef. “He also believed starches like rice and potatoes caused tumors in the digestive tract, and was the first advocate for a low-carb diet. So he created the Salisbury steak to prove his hypothesis.” Sony lifted the ziplock bag of frozen steaks and marveled at it. “It’s a true feat of Victorian-era innovation.” Grazina examined the steaks in the bag. “Huh. A kind doctor invented the best dish in the world. No wonder we love it.”