2 (20-ounce) packages whole frozen strawberries or 2-1/2 quarts fresh strawberries
1 pound fresh or frozen cranberries
5 pounds sugar
2 (3-ounce) pouches liquid fruit pectin
Grind strawberries and cranberries in a food processor or grinder; place in a large kettle. Add sugar. Bring to a full rolling boil; boil for 1 minute. Stir in pectin; return to a full rolling boil. Boil for 1 minute, stirring constantly. Remove from heat. Cool for 5 minutes; skim off foam. Pour hot mixture into hot jars, leaving 1/4-in. headspace. Adjust caps. Process for 15 minutes in a boiling-water bath.