Blackberry Jelly
["almost 4 c. blackberry juice", "5 c. sugar", "1 box pectin", "1 Tbsp. butter"]
["Measure out sugar and set aside.", "Measure juice and put into dishpan.", "Add pectin and butter.", "Bring to boil, stirring frequently.", "Add sugar, stirring frequently, and bring to a rolling boil.", "Boil for 1 minute.", "Skim off foam, if necessary.", "Add to hot, sterilized jars.", "Wipe rims of jars after adding liquid; place flats on and screw on lids tightly.", "Invert jars for 30 minutes and then turn upright, making sure jars are not touching and are not in a draft."]
["almost", "sugar", "pectin", "butter"]