Step 1

Drain the herring and remove the onions.

Step 2

Replace the original onion rings with about 5 red-onion rings. Mix in the sour cream, lemon juice, and sugar.  (The amount of sour cream and onion rings can vary according to taste and the number of guests.)

Step 3

Place in a larger covered glass container and chill in the refrigerator for a few hours or overnight.  Sprinkle with dill and serve with crackers or on top of challah. This will last for a few weeks in the refrigerator.