This drink comes from Charles H. Baker’s 1939 The Gentleman’s Companion, which traces its roots back to Manila, circa 1920. The drink originally called for pineapple juice, which we’ve replaced with Small Hand Foods’ pineapple gum syrup, which is a mixture of pineapple juice and sugar thickened with gum arabic. We’ve also replaced the heavy cream with orgeat. The key to making a good fizz is to use three or four large ice cubes in your shaker and shake the drink longer than you might think necessary. Fifteen seconds is about right.