Rinse vegetables and mushrooms from dirt. Cut off the desired pieces of cheese and butter. Thaw seafood if you bought it frozen. Measure milk into a glass.
Cut the onions and mushrooms into cubes and place in a frying pan. Fried in sunflower oil. Fry until all the liquid has evaporated.
Add mussels, squid and shrimp to the pan, salt and pepper to taste. Fry for 3-4 minutes. Add butter.
Pour sour cream and cream into the frying pan, then dill, stir and simmer for 5 minutes.
Transfer the julienne into a baking dish and bake in the oven at 180 degrees for 10 minutes. After 10 minutes, remove the pan and sprinkle with julienne cheese. Place in the oven for a couple more minutes until done.
It is best to serve julienne portions in white ceramic forms with fresh herbs. This is how the dish will look like a restaurant one.