#259 Cocktail: Sidecar

    The exact origin of the sidecar is unclear, but it is thought to have been invented around the end of World War I in either London or Paris. The drink was directly named for the motorcycle attachment.
    The Ritz Hotel in Paris claims origin of the drink. The first recipes for the Sidecar appear in 1922, in Harry MacElhone's Harry's ABC of Mixing Cocktails and Robert Vermeire's Cocktails and How to Mix Them. It is one of six basic drinks listed in David A. Embury's The Fine Art of Mixing Drinks (1948).
   According to Embury, the original sidecar had several ingredients, which were "refined away". Embury also states the drink is simply a daiquiri with brandy as its base rather than rum, and with Cointreau as the sweetening agent rather than sugar syrup. He recommends the same proportions (8:2:1) for both, making a much-less-sweet sidecar. However, Simon Difford, in his book Encyclopedia of Cocktails, notes Harry Craddock's ratio of 2:1:1 in The Savoy Cocktail Book, and then suggests a middle ground between Craddock's recipe and the "French School" equal parts recipe of 3:2:2, calling Embury's daiquiri formula "overly dry" for a sidecar.
   The earliest mention of sugaring the rim on a sidecar glass is 1934, in three books: Burke's Complete Cocktail & Drinking Recipes, Gordon's Cocktail & Food Recipes, and Drinks As They Are Mixed (a revised reprint of Paul E. Lowe's 1904 book).

Wikipedia

2 1/2 ounces cognac

1 ounce triple sec

1/2 ounce fresh lemon juice