Grape Jam - cooking recipe

Ingredients

Concord grapes
sugar for each pound of grapes

Preparation

Pulp the grapes, saving the skins.
Put the pulp on to cook with a small amount of water to keep it from sticking.
When soft mixture, rub through sieve to remove the seeds.
Add the skins after you have put them through a blender.
Add 3/4 pound of sugar for each pound of grapes.
Cook until mixture is thick or test a little on a cold plate.
Seal in sterilized glass jars.