1/3 c. 100% frozen fruit juice concentrate 2-3 .25 oz envelopes unflavored gelatin (use 2 for softer fruit snacks, and 3 for firmer ones) molds Pour the juice into a small saucepan. Sprinkle the gelatin over the juice and let it sit for a few minutes. Put the pan over medium heat and stir until all the gelatin is completely dissolved. Pour into a measuring cup with a spout so you can easily fill your molds. Fill molds and allow to set at least 20 min.