by Ava Morlier, Culinary Arts Writer

Happy July! Need a cold, sweet drink to fight the heat? Try today’s recipe: the Key Lime Soda!

A drink enjoyed by the Vietnamese, this beverage captures all the delicious flavors of a key lime pie, all in one sip. Condensed milk and pasteurized egg yolk (used to thicken the beverage) give the drink a thick and creamy base, while cold club soda gives a bubbly airness to the drink. Finally, the drink is finished off with the sweet and tangy flavor of the namesake, lime. Though much different than your basic lemonade, this drink will satisfy your taste buds with every sip, thanks to the myriad of different flavors.

Enjoy this cold drink alone, with friends, or for those under 21 (it’s alcohol-free!) and beat the sweltering summer heat deliciously!

Key Lime Soda


1 pasteurized egg yolk

⅓ c. sweetened condensed milk

½ tsp. salt

1 c. cold club soda (or enough to fill the glass)

2 tbsp. lime juice

½ c. ice (or enough to fill the glass to the rim)

1 lime, thinly sliced

Tools Needed

Dry and liquid measuring utensils, tall glass, and whisk


In the glass, combine the egg yolk, condensed milk, and salt. Whisk until smooth.

Once smooth, pour the club soda into the glass until the liquid reaches half an inch from the rim, stirring vigorously as the soda is poured. Once poured, stir liquid until both components are well combined.

Add the lime juice and mix well; add ice until the liquid reaches the rim of the cup.

Garnish with a slice of lime and serve immediately.

*Note: if the drink sits out for a long time, it may have a curdled appearance. This is normal and the drink is still safe to consume.

*With credit to Incredible Egg and the American Egg Board’s Egg Foundations course on

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