The complete guide to bar master, bar calisthenics, bar master deluxe, master bar and much more.How. to. Make. Sour. Mix. Herea#39;s an easy recipe for sour mix used in many cocktails. Whisk one egg white in a medium sized bowl until frothy. Stir in one cup of sugar. Add two cups of water. Squeeze enough fresh lemons for two cups ofjuice.