Fresh with juicy summer fruit and cooling mint, this juice-based gelatin fruit salad is a delicious throwback to childhood. Make it ahead for backyard barbecues, and feel free to substitute grapes or nectarines for the peaches and blueberries. (Note: Using vegan gelatin, the finished dessert will be less firm than with traditional gelatin.)
In a small pot, bring the juice just to a simmer over medium-high heat. Remove from the heat and whisk in the gelatin until dissolved. Transfer to a large heatproof bowl. Stir in the ice until completely dissolved, and then stir in the blueberries, mint, and peaches. Cover and chill until firm, 4-6 hours, or overnight.