Whiskey Amaro Sour Here’s a Whiskey Sour with a difference — a good measure of Amaro di Angostura gives the palate length and most importantly, a load of character. This recipe is one we picked up from James Irvine of Shady Pines Saloon. Print Recipe Whiskey Amaro Sour 50 ml rye whiskey30 ml lemon juice20 ml Amaro di Angostura2.5 ml sugar syrup dash egg white Dry shake then shake all ingredients with ice. Strain over ice in an old fashioned glass. Garnish with a bitters stained lemon.