Wash the mushrooms, dry with paper towels and cut from the bunch. Peel the garlic and cut into thin slices. Prepare clean, sterilized jars and nylon lids. For serving, peel and cut the onions into thin half rings.
Pickle the oyster mushrooms. Place the mushrooms in a saucepan and cover with water. Add all the spices and herbs: salt, sugar, bay leaf, cloves, peppercorns, garlic, dried dill. Turn on medium heat and bring to a boil. Then add vinegar and cook for 25 minutes. Remove from heat and cool slightly.
Pack the pickled oyster mushrooms for storage. Place the mushrooms with the marinade in jars so that the liquid completely covers the oyster mushrooms. Then pour 1 tbsp into each jar. l. sunflower oil. Close the jars with lids and place in the refrigerator.
Place the pickled oyster mushrooms in a porcelain bowl, pour over aromatic sunflower oil, and garnish with onion half rings.