Foam is not just decoration. Done well, it adds aroma at the rim, changes mouthfeel, and can rebalance a drink by softening sharp edges or carrying a top-note flavor into every sip. Done poorly, it collapses fast, tastes “eggy” or bitter, and makes service inconsistent. This guide explains what cocktail foam is, why it forms, the main foam styles used in bars, and how to make foam reliable in real service. It is technique-only and focuses on stability, workflow, and troubles

The Whiskey Sour is a timeless cocktail, beloved for its balance of spirit, citrus, and sweetness, crowned with a velvety froth of egg white. But in today’s era of creative mixology, classics are meant to be reimagined. Enter the Lager Whiskey Sour - a twist that merges the malty bitterness of beer with the familiar structure of the sour, resulting in a drink that is complex, refreshing, and modern.