Cook the rice in boiling salted water for about 10 minutes. Clean and wash the celery and cut it into bite-sized pieces. Chop some celery leaves finely and put aside. Cook celery in boiling salted water for about 8 minutes, drain.
Clean, wash and halve the mushrooms. Clean the sole, sprinkle with lemon juice, salt and turn lightly in the flour. Fry in hot oil for 5-7 minutes on each side. Fry the mushrooms in 1 tablespoon of hot fat for about 5 minutes until golden brown.
Season with salt and pepper. Add the celery and sauté briefly. Fry the rice in the remaining hot fat. Mix in celery green and pink berries. Serve everything garnished with lemon.