3 Ways to Make a Whiskey Sour

Bitters? An egg white? And...orange juice?

The Whiskey Sour was the first cocktail I learned to make. 

And by learned, I don’t just mean “learned to make by following a recipe.” I mean it was the first cocktail I memorized and could make without having to refer to anything. It was also the first class of cocktails I learned, in the sense that I learned some simple variations, and then began, slow…