Please make sure you are using fresh dry vermouth (yes, it does spoil - or at a minimum, go stale - over time). But small bottles if you don't use it often and keep it cool or in the fridge.
There's a lot of Campari in this drink, but the vermouth really tones it back down so you won't get walloped with its bitterness.
Old Pal Cocktail
Combine in an iced mixing glass:
- 1 ounce rye or bourbon
- 3/4 ounce dry vermouth
- 3/4 ounce Campari
Stir until well chilled. Strain into chilled cocktail glass. Garnish with lemon twist.