Grandma'S Grape Jelly - cooking recipe

Ingredients

3 lbs grapes
7 cups sugar
1/2 bottle Certo

Preparation

To prepare juice, stem grapes.
Crush thoroughly.
Add 1/2 cup water.
Bring to a boil and simmer for about 10 minutes.
Place in cloth bag and squeeze out juice.
Measure 4 cups juice into pan, add sugar and mix well.
Place on high heat and bring to a boil, stirring constantly. Stir in certo.
Bring to a rolling boil.
Boil hard for 1 minute.
Remove from heat, skim and pour into jelly glasses.
Parafin at once.