I only preserve cucumbers so I can eat them immediately. Or pickle them, at least. After all, it's not as if cucumbers are hard to come by these days. I pickle because it's delicious.I use Swedish pickling vinegar for this, and a good large bunch of dill. The vinegar is incredible stuff. It would strip the paint from twenty years of redecorated school lunch halls from 30 metres. So it needs to be diluted.There's a recipe on the website somewhere for mizeria, which is a delicious Polish version with sour cream added, so that's something you can also do if the fancy takes you.There's something about the sharpness and crunch of a good pickle, the acid tang that brings dishes into sharp focus. It's like a punch of flavour that keeps you interested. I'll often eat them straight from the jar just for that little tingle you get.Fermenting and preserving is one of our oldest food preparation methods. It's good for you too. So try this, it's obviously great in burgers, although I know some people think it's the devils food, but it's also great with fish, meatballs, in cheese and ham sandwiches and DON'T FORGET TO VOTE LABOUR TODAY.Ingredients600ml water200ml Swedish spirit vinegar (if you're using cider vinegar or such, use it neat in a 1:1 ratio)30g sugar20g saltA large bunch of dill1tbsp yellow mustard seeds10 juniper berriesA few black peppercorns1 cucumber, sliced long and thin. Use a mandoline, preferably. Get one if you don't have on. They're fun, in a kind of lethal way.MethodHeat the water, salt and sugar in a pan until the salt and sugar dissolve then add the vinegar.Leave to cool while you slice the cucumber, carefully.Add the dill, mustard seeds and peppercorns to a suitable sized sterilised Kilner jar or suchlike, top with the cucumber and pour over the pickling liquid.Leave for at least half an hour before eating. This will keep in the fridge for about a week and you can then top up with new cucumber twice more before you need fresh pickling liquid.