For a non-alcoholic version, omit the sake and use a non-alcoholic spirit or simply increase the lemon juice and simple syrup slightly. Adjust sweetness to taste. If you prefer not to use egg white, you can substitute with a few drops of aquafaba for a similar frothy texture.
Keyword Classic Cocktails, Egg White, Japanese Cocktails, lemon juice, Sake, Sake Sour, Simple Syrup, Sour Cocktails