Step 1.
- In a large bowl or pitcher, combine gin, lemon juice, simple syrup, and tonic water.
Step 2.
- Add sliced citrus fruits (lemons, limes, and oranges) to the mixture.
Step 3.
- Stir well to combine all ingredients and chill for about 10 minutes.
Step 4.
- Serve in punch cups or over ice, garnishing each glass with fresh mint leaves.