- To make toothpaste with a more traditional toothpaste consistency and a mint-y taste, mix together 6 teaspoons of baking soda, 1/3 teaspoon salt, 4 teaspoons glycerin, and 15 drops of peppermint or wintergreen extract. Depending on how much you use at a time, this recipe is good for 15-20 applications and should be stored in any appropriately sized container with a snug lid.