Dekadent Rhubarb Gin Fizz

Start with the rhubarb syrup, unless you are using store-bought. Simmer the chopped rhubarb, sugar and water gently for about 10 minutes, until the rhubarb is soft and the syrup has turned pink. Strain without pressing so it stays clear, and let it cool completely. Fill a tall glass with ice to chill it while you mix the drink. Combine the Dekadent Pink Gin, rhubarb syrup, lemon juice, egg white, cream and vanilla in a shaker without ice, and shake hard for about 20 seconds to build a dense, airy foam. Fill the shaker with ice and shake for another 15 seconds, until it is ice cold. Empty the glass and double strain the drink into it. Slowly top with chilled sparkling water or cava, so the foam rises above the rim. Garnish with a thin ribbon of rhubarb. Serve immediately, before the foam settles, and enjoy your Dekadent Rhubarb Gin Fizz!