01 - Pour the fruit juice and lemon juice into a small saucepan. Sprinkle the powdered gelatin evenly across the surface and allow it to bloom for 3 to 5 minutes undisturbed.
02 - Place the saucepan over low heat and stir gently until the gelatin has completely dissolved. Do not allow the mixture to come to a boil.
03 - Remove the saucepan from heat. Whisk in the collagen peptides powder, honey or maple syrup, and vanilla extract until fully incorporated and smooth.
04 - Taste the mixture and adjust the sweetness level with additional honey or maple syrup as desired.
05 - Carefully pour the liquid into silicone jelly molds or a parchment-lined, lightly oiled square baking dish.
06 - Press sliced fresh berries or a pinch of citrus zest into each mold or across the surface of the baking dish for visual appeal and added flavor.
07 - Transfer the molds or dish to the refrigerator and chill for at least 2 hours, or until the jellies are firm and fully set.
08 - Gently pop the jellies out of the silicone molds. If using a baking dish, cut into even squares with a sharp knife. Serve chilled.