Mix the powdered gelatin with the 1 tablespoon (15 ml) of grape juice and let stand for 5 minutes.
Heat the remaining ½ cup (120 ml) grape juice in a small saucepan and turn off the heat before it comes to a boil. Add the gelatin and fruits, and mix.
Divide the liquid and fruits into individual cups with lids (such as yogurt containers) and refrigerat