Step 1.
- Fill a highball glass with ice.
Step 2.
- Pour in 1.5 oz of gin.
Step 3.
- Add 1 oz of fresh orange juice.
Step 4.
- Include 0.5 oz of Italian vermouth.
Step 5.
- Top with 2 oz of tonic water.
Step 6.
- Stir gently to mix the ingredients.
Step 7.
- Garnish with an orange slice and a sprig of basil.