How to make grape freezer jelly from frozen grape juice concentrate.
Step 1: Mix 1 pkg. pectin with 2 cups lukewarm water. Stir until dissolved. Let stand 45 minutes.
Step 2: Pour thawed 6 oz. grape juice concentrate into separate bowl. Mix in 1-3/4 cups sugar and stir until mostly dissolved. Add 1-1/2 cups sugar to pectin (AFTER the 45 minutes).
Step 3: Combine the grape juice mixture and the pectin mixture and stir until all sugar is dissolved.
Step 4: Pour into jars. Let stand 24 hours.
Step 5: Label and then freeze or refrigerate!