Muddle three lemon wedges, 4 to 6 basil leaves and 3/4 fluid ounce simple syrup in the bottom of a rocks glass using a muddler. Add 2 fluid ounces Grey Goose vodka (750ml, $49.98) and top with crushed ice. Give a quick stir and top with more crushed ice. Garnish with a basil leaf.
Tip: To make crushed ice fill a tea towel with cubes, wrap it up, and crush with a muddler or bottom of a frying pan.