Best to microwave only one batch at a time. Since it's such a small amount, simply refrigerate, rather than processing.
Microwave Jelly (small amounts)
by Sharon Anne
Yield: about 1 1/2 (half-pints)
1 Tbsp REGULAR pectin powder
3/4 Tbsp REGULAR ClearJel® powder
1 cup granulated sugar, divided (or Whey Low D granular)
9-ounces grape juice concentrate, thawed & undiluted
1 tsp fresh lemon juice
In a small bowl, mix together the pectin and ClearJel powder with 2-4 Tablespoons of your choice of sweetener and set aside.
Bring mixture to a boil on high setting (about 4 minutes). Remove from the oven and stir.
Return the uncovered mixture to the oven and cook until jelly sheets from a spoon (about 1 minute).
Skim foam and ladle into sterilized jars. Adjust 2-part lids. Refrigerate.