Step 1

Stir together the salt and sugar on a small plate.

Step 2

Rim each glass with a grapefruit wedge and dip it in a mixture of the salty chili sugar.

Step 3

Mix together sliced grapefruit, grapefruit juice, kombucha, and ginger beer in a large glass or pitcher and let chill in the fridge until ready to serve.

Step 4

Pour into rimmed glasses and garnish with a sprig of fresh rosemary sprig.