Step 1.
- Chill a champagne flute by filling it with ice water for a few minutes.
Step 2.
- Empty the flute and add 1/2 oz of absinthe, swirling it to coat the inside.
Step 3.
- Discard any excess absinthe that accumulates at the bottom.
Step 4.
- Slowly top the flute with 4 oz of chilled champagne.
Step 5.
- Garnish with a lemon twist.
Step 6.
- Serve immediately.