Prepare rice in boiling salted water according to package instructions. Clean, wash and roughly grate the zucchini. Drain rice and let it cool down for 10-15 minutes. Mix rice, zucchini, egg yolk and flour. Season with salt and pepper
Heat 1/2 tbsp. oil in a large, coated frying pan. From the zucchini-rice mixture, add 3 buffers (7 cm Ø) to the pan with a tablespoon. Fry the buffers on both sides for approx. 4 minutes at medium heat
In the meantime, wash the cucumber thoroughly and cut it lengthwise into thin slices with a peeler. Wash the dill, shake dry, pluck the flags and chop. Mix vinegar, salt, pepper and 1 pinch of sugar. Slowly fold in 1 tablespoon of oil. Mix cucumber slices, dill and vinaigrette. Season yoghurt with lemon juice, salt, pepper and 1 pinch of sugar. Arrange buffer and cucumber salad on plates. Add yoghurt dip