From Vital Vegas - Cosmopolitan’s Verbena cocktail recipe:
1 spoonful sweet ginger puree
2 kaffir lime leaves
1/4 oz. lemon juice
1/4 oz. coconut ginger rooibos tea
1/2 oz. lemongrass syrup
2 oz. Belvedere vodka
top with Gosling’s ginger beer
Tear the kaffir leaves and muddle with ginger puree. Then, combine the remaining ingredients and shake well. Strain over ice into a collins glass and top with Gosling’s ginger beer. Garnish with a kaffir lime leaf, candied ginger and, of course, a “Szechuan Button”