Sliced Strawberry Jam(1930)  
["4 1/2 c. (2 lb.) sliced strawberries", "7 c. sugar", "1/4 c. bottled pectin"]
["Cut berries into slices.", "Put into large kettle; stir and bring to a full rolling boil over high heat.", "Stir constantly before and while boiling.", "Boil hard 3 minutes.", "Remove form heat and stir in pectin.", "Stir and skim by turns for just 5 minutes to cool slightly to prevent floating fruit.", "Pour quickly into hot sterilized jars.", "Seal.", "Makes 9 to 10 (8 ounce) jars."]
["strawberries", "sugar", "pectin"]