Clean the sterlet, gut it.
Pour 2.5 liters of water over the chicken, bring to a boil, cook for 30 minutes.
Fish trifles, without peeling, wrap in cheesecloth, add to chicken broth and cook all together for another 10 minutes. Remove chicken and fish, strain the broth, salt.
Peel vegetables, finely chop. Heat the oil in a frying pan, fry the vegetables for 3 minutes. and add to broth.
Cut the sterlet into portions, dip into the prepared broth and cook for 5 minutes. Before the end, pour vodka into the broth.
Arrange the pieces of sterlet on plates, pour over the broth.