As much as 40 percent of the food produced in the U.S. goes to waste. The reasons are all over the map: supply chain inefficiencies, consumers’ insistence that food look perfect, and local regulations that discourage food from being donated to those who need it. One factor, however, is the confusion that results from the tangled web of food date labels across the country. Date labels on boxes and cartons — such as ‘best by,’…