Another one from the back of my brain. I can't vouch for it fully, as it's been years. I may need to conduct retesting of these, for mixological rigor...
Thank You Kindly
1 shot Cointreau
1 shot Campari
1 shot Amaretto
2 dashes of Bitters
1 slice of lemon
Pour into a Collins glass and serve over ice and stir a bit and garnish with a slice of lemon.
