Rim the edge of a lowball glass with a grapefruit wedge, careful not to get its pulp on the glass.
Dip the rimmed glass into the plate of coconut sugar until the rim is completely coated with sugar.
Pour the fresh grapefruit juice, lemon juice, and maple syrup into the rimmed glass and stir until well combined.
Add a shot of vodka to the grapefruit mixture.
Add ice and top with club soda until the glass is full.
Serve with a slice of grapefruit and a sprig of fresh rosemary.
Notes
For the best flavor on your cocktail, squeeze your own grapefruit juice! The trick is to roll the grapefruit against the counter and use a citrus juicer to extract as much juice as possible.
Taste the grapefruit vodka cocktail and adjust its sweetness to your liking by adding more maple syrup. You can also make your own stevia simple syrup from scratch!
Channel your inner barista and get creative with the presentation of your grapefruit vodka! Serve it with edible flowers, fresh grapefruit slices, cherries, lemon peel, mint, rosemary, or basil.