Cut the leeks, grate the carrots and put out a little butter.
Mushrooms need fresh, whole hats. I cooked with forest waves, but in the classics, of course, you can use mushrooms. Mushrooms very well to wash and dry.
Salmon (fillet) cut into portions and place in a baking dish skin down. Sprinkle with salt and pepper. Mix balsamic vinegar with lemon juice and brush to lubricate this mixture of fish.
Put a layer of leek and carrot on top, add a little salt.
Mix sour cream with cheese.
Evenly grease gratin with sour cream and cheese. Spread over mushroom caps and halved cherry tomatoes. A small amount of oil to melt and brush to lubricate the surface. Optional - mushrooms and top with salt. Put in a heated oven and cook at 170-180 degrees for about 30-35 minutes. Be guided by your oven. At the end of baking, turn on the top grill and slightly "burn" tomatoes-this has a certain flavor!