You may need to adjust the sugar depending on the ripeness of your fruit. Using kiwi sugar syrup helps boost this cocktail's flavour but, if your kiwis...
My problem is after a lifetime of Marmite abuse and a couple of decades of smoking my palette is not what it should be and I find vodka a very difficult spirit in cocktails as it adds nothing... unlike Gin which brings all sorts of flavours or Rum which has a complexity of it's own. Maybe I will try this recipe with Gin, or, I wonder, if we were to add something like Gren Chartreuse or Absinthe or Falurnam in small doses or Grand Marnier or Benedictine or something just to add layers in there