Xanadu Cocktail: Basil and Grapefruit

recipe from Grove Park Inn, Asheville North Carolina

2 basil leaves
1/2 grapefruit, juiced
1 1/2 ounce Hendricks Gin
1/4 ounce simple syrup
club soda
1 thin slice grapefruit

In a rocks glass, muddle 1 basil leaf with symple syrup. Fill the glass with ice. Add fresh squeezed grapefruit juice and gin. Stir and top with club soda. Garnish with basil leaf and sliced grapefruit.