Step 1.
- Fill a Collins glass with crushed ice.
Step 2.
- In a shaker, add 2 oz of gin, 1 oz of fresh lime juice, 0.5 oz of simple syrup, and a few dashes of Angostura bitters.
Step 3.
- Shake well until chilled.
Step 4.
- Pour the mixture over the crushed ice in the Collins glass.
Step 5.
- Use a swizzle stick or a bar spoon to mix the drink, adding more crushed ice if necessary to create a slushy consistency.
Step 6.
- Garnish with a mint sprig and a lime wheel before serving.