In 2010 I created the Double Rainbow Cocktail, a simple drink I named after the YouTube video. It contains vodka, St. Germain elderflower liqueur, grapefruit bitters, and soda water, and has a lemon peel garnish. Anyway, now it's in a mini cocktail book called The Cocktail Hour: Vodka. It's a 3"x5" book of about 30 recipes plus a few infusions, with black and white illustrations. It's part of a series - there is a rum and a gin book too. Just thought I'd let you know.