Chill 4 martini glasses or similar. Put vodka into each of your 4 glasses. Add a few drops of lemon juice, a splash of Martini and a few ice cubes. If you like, use a zester to peel thin strips of lemon peel and add a couple to each glass. Top them up with Prosecco and stir. Serve immediately.
GF – make sure the ingredient doesn’t contain traces of gluten!