Rub the oyster mushrooms with a cloth. Clean and wash the spring onions and cut both into bite-sized pieces.
Dice the bacon and fry in the butter until crispy. Now add the oyster mushrooms and onions and simmer over medium heat until the liquid has evaporated. Peel the garlic, cut into fine cubes and add to the mushrooms. Pour in the cream and let it boil down for 6-8 minutes. Refine the mushrooms with the crème fraîche, season with salt and pepper and sprinkle with the chopped parsley.