Frostie Sour

Prepare the vanilla root beer reduction in advance: bring 12 oz vanilla root beer to an active simmer. Add 4 swaths of orange peel, 1 tablespoon granulated sugar and 1 cinnamon stick. Cook until reduced to about one-third, around 20 minutes, then strain. Use the listed 40 cc portion.

Begin by combining the orange juice, lemon juice, vanilla root beer reduction, and aquafaba in a cocktail shaker.

Dry shake the mixture vigorously to create a frothy texture.

Add ice to the shaker and shake again until well chilled.

Strain the cocktail into a chilled cocktail coupe glass.

Garnish with an orange peel twist and add 3 drops of cardamom bitters for an aromatic finish.