I decided to put both Kir and Kir Royal in the same post due to the fact that they are, basically the same drink, except that one is with prosecco and the other with champagne.
In France it is usually drunk as an apéritif before a meal or snack. Originally the wine used was Bourgogne Aligoté, a lesser white wine of Burgundy. Nowadays, various white wines are used throughout France, according to the region and the whim of the barkeeper. Many prefer a white Chardonnay-based Burgundy, such as Chablis.
Originally called blanc-cassis, the drink is now named after Félix Kir (1876–1968), mayor of Dijon in Burgundy, who as a pioneer of the twinning movement in the aftermath of the Second World War popularized the drink by offering it at receptions to visiting delegations. Besides treating his international guests well, he was also promoting two economic products of the region. Kir initially allowed one of Dijon's producers of crème de cassis to use his name, but subsequently extended the right to their competitors as well. According to Rolland (2004), the reinvention of blanc-cassis (post 1945) was necessitated by the German Army's confiscation of all the local red Burgundy during the war. Faced with an excess of white wine, Kir renovated a drink that previously was made primarily with the red. (Wikipedia)
5 ounces chilled dry white wine
Creme de cassis to taste
( for Kir Royal, instead of white wine, use champagne)