Bojti Halikraleves

Ingredients

• carrots
  2 unit
• parsnips
  2 unit
• onions
  2 medium
• celery knob
  1 small
• salt
  1 tsp
• bay leaves
  2 unit
• black peppercorns
  5 unit
• unsalted butter
  1 tbsp
• all-purpose flour
  1 tbsp
• paprika
  1 pinch
• fish fillet; small pieces
  ½ lb
• fish head
  1 unit
• spawn (fish roe)
  1 lb
• white wine vinegar
  2 tbsp
• sour cream
  ¼ cup