If you're concerned about raw eggs and salmonella contamination, then this won't be the drink for you, but here's a recipe if you want to give it a try. I prefer to use pasture-raised eggs from a farm I trust.
Have you tried Vietnamese egg soda? What did you think?
Vietnamese Egg Soda (Soda Sữa Hột Gà)Makes 1 drink
2 tablespoons sweetened condensed milk, or to taste
1 egg yolk
1 cup club soda
Place sweetened condensed milk and egg yolk in the bottom of a glass. Fill glass with club soda and stir vigorously until combined.
Pour over ice and serve. Note: The carbonation may curdle the eggs slightly. If you like, you can strain it to remove any solid bits.
Related: 7 Refreshing Asian-Style Beverages
(Images: Emily Ho)