Be sure to choose fish with caviar, there must be at least one. First, prepare the sauce. Peel the apple from the skin and the core, cut it into slices and fold it into a blender. Add mustard, chopped onions, vegetable oil, sour cream and soy sauce. Interrupt everything until smooth.
Pull out the caviar from the fish and add to the blender; if you get milk, put it with caviar, too. Interrupt again until smooth.
Here we have such a sauce, add salt and spices to taste to it.
Remove the skin from the herring and remove all the bones. Cut the fillet into small pieces.
Put one layer of fish in a jar, then fill with sauce, do these steps with the rest of the fish, then fill in generously with sauce. Cover tightly and refrigerate overnight.
Our wonderful fish in caviar sauce is ready.
To prepare a herring appetizer in caviar sauce, we need very few ingredients, it is prepared very simply. This appetizer is delicious and delicate, perfect for a festive table, very tasty in combination with potatoes.