Wash and clean the cucumber, cut it in half lengthwise, remove the seeds and, except for a little bit for garnishing, cut it into small pieces. Wash dill, shake dry, pluck dill flags from the stems. Puree cucumber, dill, except for a little bit for garnishing, buttermilk, vegetable stock, vinegar and crème fraîche in a blender.
Season to taste with salt, pepper and sugar. Spread a thin layer of oil on a pan. Fry the bacon slices for about 3 minutes while turning them until crisp. Remove from the pan, drain on kitchen paper and place on wooden skewers in waves.
Arrange cucumber cold peel in plates and garnish with cucumber, dill and bacon skewers.