Cucumberwashed and seeds removed. I used about half a cucumber which would do for two people. Slice the cucumber in cubes
vegetable stock or use a stockcube and about half a liter of water
You can also add fresh cilantro to it, if you'd like. The stock and the spices give it enough flavor on it's own but feel free to add more pepper or salt if you want to.
In a medium saucepan heat the oil and fry the onions on medium fire for about 1 minute. Add the cucumberslices or cubes, add coriander, ginger, cumin and piment to your taste. Add 1/2 liter of stock or 1/2 liter of water and a stockcube and boil for about 8-10 minutes until the cucumber is soft.
Puree the soup in a blender or foodprocessor, add salt if you want and leave to cool. Once cooled of spoon the yogurt through the soup. I just added enough yogurt until it was to my liking, so just taste as you go along.