Peel half a cucumber and slice very thinly.
Put in a dish with two tablespoons of white wine vinegar and some
salt to season
Stir in enough yoghurt to bind together.
Dry fry some nigella seeds and scatter over the top
If you are feeling indulgent, add a dollop of crème fraiche as well.
It is a staple French supermarket ready made salad, but the
home-made version is so much better, and takes moments to prepare.