Add gin, Campari, sweet vermouth, and elderflower liqueur.
Stir for 20-30 seconds until well chilled.
Strain into a rocks glass filled with fresh ice.
Garnish with orange peel or lemon twist.
Notes
The elderflower liqueur softens Campari's bitterness and adds floral sweetness. Adjust Campari for a lighter taste. Always garnish with citrus to balance flavors. Optional elderflower cordial adds more sweetness if desired.