Wash the cucumber, pat dry with kitchen paper, peel with the garnish peeler, cut in half lengthways, scrape out the seeds with a small spoon and cut into small crescents with the knife. Mix the crème fraîche (1 tbsp), Greek cucumber salad (2 tbsp), light rice vinegar (1 tbsp) and sugar (1 tsp) into a salad dressing. Then carefully mix the salad dressing with the small cucumber moons and let stand / steep for a while.