Start by placing the silicone gummy molds onto baking sheets to help for easy transport into the fridge when filled.
Place 2/3 cups elderberry syrup into a large measuring cup. Top with gelatin and whisk to combine.
Warm 1/3 cup blueberry juice in a small saucepan over medium-low heat. Right before it's about to boil, remove from the heat and pour over the elderberry syrup mixture. Whisk everything together to remove any lumps.**
Using a small syringe, fill all of your molds and place in the refrigerator for at least 30 minutes to set.
Store gummies in a sealed glass container in the fridge for up to 3 weeks. Enjoy!
**If mixture becomes too thick, you can warm over low heat to bring back to liquid form.