Strawberry Preserves

4 cups Strawberries
5 cups Sugar
1 tablespoon Vinegar, cider
Put all the ingredients into a large kettle, stirring to dissolve the sugar. Bring to a boil and boil hard for about 14 minutes, watching carefully and stirring often. When the time is up, remove from heat and skim. Pour this into shallow pans and allow it to cool from several hours to overnight. Put in glasses or jars, add parafin, and seal.