Although Walmart sells more groceries, Kroger is the largest grocery chain in the U.S. and some things on its list of documented food trends in 2020 will concern health specialists. The effort to avoid contracting COVID by staying home included increased consumption of flavored potato chips. Also on the list were fresh burger patties and Mexican cheese blend, all washed down with more Sauvignon Blanc wine. Perhaps to the healthier side, the largest increase in food demand was for zero-calorie cola.  Potatoes and burgers are comfort food in the U.S., but potato production is growing more rapidly in the rest of the world. U.S. production expanded an average 0.45 percent/year over the past decade whereas for the rest of the world it grew...