Khaviar (Caviar)

Ingredients: (4 servings) fine caviar, 200 grams (or less, depending on your budget) salted crackers small onion, one fresh lime juice, one teaspoon fresh parsley, 50 grams butter (optional)

Directions:

Iranian caviar from the Caspian Sea is probably the best in the world.
Peel and chop onion very finely. Wash and chop parsley very finely. Add caviar to onion and parsley and mix well. If using unsalted crackers, a bit of salt can be added to the mix. If desired, place a bit of butter on each cracker, and serve with the mix.

Source :
Art of Cooking or ( Honar-e Aashpazi ) by Roza Montazemi