The whiskey sour has been refreshing drinkers since the 19th Century, DeGroff says. Pour 1 1/2 oz. of whiskey, 3/4 oz. of simple syrup, 3/4 oz. of fresh lemon juice and 1/2 oz. of beaten egg white into a mixing glass. Shake the glass very hard with ice to get the egg whites to emulsify and create foam. Pour the drink into a cocktail or old-fashioned glass. Don't worry about salmonella, in a mixture of alcohol and acid, bacteria won't be able to grow, DeGroff says.