Strawberry Jam
["2 qt. strawberries", "1/2 tsp. butter", "7 c. granulated sugar", "1 envelope Certo"]
["Hull, wash and mash the berries.", "Add the sugar.", "Stir up real well.", "Add 1/2 teaspoon butter.", "Put on stove.", "Bring to a full rolling boil, one that can't be stirred down.", "Stir occasionally before it comes to a hard boil.", "Add the Certo, stirring constantly.", "Boil real hard for 1 minute.", "Remove from stove. Stir and remove any foam, then pour into hot jars and seal immediately.", "Fill jars 1/8-inch from the top."]
["strawberries", "butter", "sugar", "envelope Certo"]