Whiskey Sour Vintage
2 oz Bourbon/Rye whiskey
¾ oz lemon juice
½ oz simple syrup
¾ egg white
Take a look at the recipe of MIXOLOGY Academy and the one from IBA
The preparation technique is Shake&Strain or Shake&Strain with Ice.
It is possible to make a Dry Shake to mount the egg white and obtain a more velvety texture.