The Amaretto Sour has gotten a bit of a bad rep over the years, so Jeffrey Morgenthaler, the bar manager of Clyde Common in Portland embarked on a project to make a better version. He boosted the alcoholic strength by mixing in nearly a full ounce of overproof Bourbon, replaced the sour mix with real Lemon Juice and added an Egg White.
Combine all ingredients in a cocktail shaker and shake without ice to integrate. Add ice and shake until chilled. Strain over fresh ice in an old-fashioned glass.