Step 1.
- Fill an Old Fashioned glass with ice cubes.
Step 2.
- Pour in 1 oz of Campari.
Step 3.
- Add 1 oz of sweet vermouth.
Step 4.
- Top it off with 2 oz of soda water.
Step 5.
- Stir gently to combine.
Step 6.
- Add 0.5 oz of elderflower liqueur gently over the top.
Step 7.
- Garnish with a lemon twist.