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Glow-in-the-Dark Edible Aquarium Terrariums

Create magical, glowing edible aquariums using tonic water, gelatin, and gummy sea creatures. These are fun, easy, and perfect for parties or a unique dessert experience.
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Prep Time 20 minutes
Cook Time 10 minutes
Total Time 3 hours 40 minutes
Servings: 8 servings
Course: Dessert, Snack
Cuisine: American
Ingredients Equipment Method Notes

Ingredients
  

For the Glowing Gelatin
  • 2 cups tonic water contains quinine for glow
  • 2 cups cold water
  • 2 (3 oz) boxes blue gelatin or plain gelatin with blue food coloring
For the Terrariums
  • 8-10 units vanilla cookies or graham crackers crushed for sand base
  • Gummy fish, sharks, sea turtles, or other ocean-themed candies
  • Whipped cream or whipped topping optional, for wave effect
  • Clear jars, tumblers, or plastic cups for containers
  • Optional garnishes mint leaves, edible glitter, candy rocks, glow sprinkles

Equipment

  • Saucepan
  • Rolling pin or food processor
  • Zip-top bag
  • Blacklight or UV flashlight

Method
 

  1. Step 1: Gently heat the 2 cups of tonic water in a saucepan until warm, not boiling. Remove from heat and stir in the blue gelatin until completely dissolved. Stir in the 2 cups of cold water. Let the mixture cool for about 10 minutes.
  2. Step 2: Crush the vanilla cookies or graham crackers into fine crumbs. Spoon about 2 tablespoons of crumbs into the bottom of each clear container to create the sandy ocean floor.
  3. Step 3: Place 1 to 2 gummy sea creatures on top of the cookie crumb layer. You can also gently press a few gummies against the sides of the containers for a more realistic look.
  4. Step 4: Carefully pour the cooled gelatin mixture into each container, filling them about three-quarters full. Add any remaining gummy creatures. Refrigerate for 3 to 4 hours, or until the gelatin is completely set.
  5. Step 5: Once the gelatin is set, add optional garnishes like whipped cream for waves, edible glitter, or mint leaves. Shine a blacklight or UV flashlight on the terrariums to activate the glow.

Notes

These are best enjoyed fresh, but leftovers can be stored in the refrigerator, covered, for 2-3 days. The glow effect is achieved by the quinine in tonic water reacting to UV light.