Clean And Soak Herring Overnight In Cold Water. Bring Vinegar, Onion, Peppercorn, And Bay Leaves To Boil. Add Wine And Heat, But Do Not Boil. Sieve Roe To Eliminate Membrane;Mix With Sugar And Sour Cream. Add To Onion Mixture. Fillet And Cut Herring Into Pieces. Layer With Sauce In A Jar And Macerate, For A Day. Keep Refrigerated......