The Blue Lagoon is a cocktail made with vodka, blue curaçao, and lemon juice. It is also known as "lagon bleu" in French. The origin of this cocktail is French, as it was created by Andy MacElhone at Harry's New York Bar in 1960. This gentleman is none other than the son of Harry, the founder of Harry's New York Bar and the inventor of the White Lady cocktail. When blue curaçao appeared on the liqueur market, he wanted to pay tribute to his father by creating a variation of the White Lady. He replaced triple sec with curaçao (which is also a triple sec, but blue in color) and gin with vodka. The result is a delicious cocktail to enjoy with friends! Ref: https://www.cookomix.com/recettes/blue-lagoon-thermomix/