Egg white has long been used to add an airy texture to tart cocktails. Try shaking one up with some Cointreau, lime and raspberries for a delightfully frothy cocktail.
Combine all ingredients in mixing glass, dry shake, then add ice and shake for a hard 10 count to emulsify the egg white.
Strain over fresh ice into highball glass and top with Club Soda.
Garnish with 3 skewered raspberries.