COMBINE BEEF AND ONIONS IN A STOCKPOT, OVER A MODERATE FLAME HEAT AND STIR FOR 15-20 MINUTES, UNTIL BROWNED STIR IN REMAINING INGREDIENTS BRING TO A BOIL, REDUCE HEAT, AND SIMMER FOR 2 HOURS SERVE HOT, GARNISHED WITH GRATED CHEDDAR CHEESE, SOUR CREAM, AND MINCED SWEET O NIONS