Aldo's Italian Soda, served at Aldo's Sidewalk Cafe in San Juan Capistrano. I copied this interesting excerpt: Adding a fine spritz to a drink is a marvelous thing, a centuries-old practice. Today, however, mixologists and bar chefs no longer think in terms of committing a splash of club soda to a cocktail. Mere carbonation is passe, now it's about adding quality effervescence. A spritz helps achieve all-important balance between the various elements in a cocktail. It enhances a drink's mouth feel, and most importantly, effervescence energizes a libation, transforming it from flat and lifeless to teeming with vibrancy and pizzazz.
One thing you can do to immediately improve your drink-making abilities is look beyond using carbonated water from the beverage gun. Artificially charged water created on-site can hardly compare to the natural effervescence of sparkling waters, source-derived products like San Pellegrino, Perrier, or Ramlosa. These famous waters have an abundance of fine bubbles and mild acidity that invigorates a cocktail. Club soda can't begin to measure up