if you can get hold of some English damsons in autumn it is well worth making this for the winter months ahead using a water bath means it will be ready in just three hours rather than three months place the damsons sugar and vodka in a vacuum bag and seal make sure the sealer is on a low setting because there is quite a lot of liquid in the bag put the bag into the preheated water bath to cook for three hours after three hours remove the bag from the water and leave to cool pass the liquid through a fine sieve and keep in the fridge or in a cool dark place the vodka gets better with time so it's best to leave it for a year or so you