Cut the leek in half lengthwise and wash thoroughly. Finely dice the leek white. Cut green into rings. Peel and finely dice the garlic.
Heat 1 tsp. oil in a small pot. Fry the leek and garlic cubes until transparent. Add rice and fry briefly. Add stock bit by bit, stirring from time to time. Always add the next portion of liquid only when the rice has absorbed the liquid. Cook for a total of 25-30 minutes
Clean and clean the mushrooms and possibly halve them. Heat 1 tsp. oil in a coated pan. Fry the mushrooms for about 5 minutes, turning them over. After about 2 minutes add leek rings, season with salt and pepper, remove
Add the mushrooms to the risotto about 5 minutes before the end of the cooking time, season with salt and pepper. Grate parmesan and stir into the risotto. Sprinkle with a little Parmesan cheese if necessary