Step 1

Pour 2 cups of the juice into a bowl.  Sprinkle the gelatin over the entire surface of the juice and let sit for 5 minutes to soften.

Step 2

Heat the remaining 2 cups of juice until it comes to a boil.

Step 3

Pour the hot juice into the bowl and stir to combine and to dissolve the gelatin.

Step 4

Pour into a 9x 12 baking pan.  Refrigerate until firm, at least several hours.

Step 5

Slice into cubes and serve plain, or with whipped cream.