Apple or Grape Jelly

Combine juice and sugar into a large pan. Place over moderate heat and bring to a boil. Stir in Certo and bring to a full rolling boil and continue at a full rolling boil for 1 minute. Remove from heat, skim and bottle at once.

This is from way back in the late 60's.

Your Apple or Grape Jelly is ready. Bon appetit!