- 1/4 c vegetable glycerin
- 2 tsp baking soda
- 2 tsp unflavored gelatine, such as Knox
- 1/2 tsp pure peppermint extract, or more to taste
Heat all of the ingredients in a small saucepan over medium heat until the mixture begins to foam. Remove from heat.
Cover and cool in the refrigerator for at least 2 hours, or until the mixture gels. Whisk and store in an airtight container.