Things You'll Need
- Shatterproof aquarium
- Stockpot
- Wooden spoon
- Potassium sorbate
- Benzoate
- Sodium benzoate
- Sugar
- Tea tree oil
- Food coloring (optional)
Instructions
Select a 1-liter aquarium or container made of shatterproof, transparent material. The narrower the vessel, the better, because you'll be filling it with hot liquid that needs to cool quickly.
Pour a liter of water into a stockpot and bring to a near boil. Weigh the following quantities of ingredients: 25 grams potassium sorbate, 27 grams sodium benzoate, 1 teaspoon of sugar.
Add the ingredients to the water and stir, mixing thoroughly. Bring to a rolling boil. Turn off the burner.
Fill the sink with ice water. Immerse the container or aquarium in the cold water. Pour the hot mixture in the container. Add 3 drops of tea tree oil as an antifungal and stir. Allow the mixture to gel, adding more ice to the sink if necessary.