a3 4. Thicken the stew by mixing two tablespoons of flour in one-half cup of cold water. Add this mixture to the stew slowly, stirring constantly. 5. Serve or can this stew while hot. (Stew for canning should be slightly undercooked.) To Can 1. Pour the hot stew into hot sterilized jars, filling to within one inch of the top. Adjust caps. 2. Process pint jars in a pressure canner at 10 pounds pressure for seventy-five minutes. 3. All home canned food should be boiled in an open pot for twenty minutes before serving. If the food smells or looks spoiled it should not be eaten. Cutting up wild ducks for soup. break off along dotted linc.