Peel the potatoes and boil in salted water until tender. Drain the water, potatoes, dried and then crushed into a puree. Add hot milk and butter. Mix well. Onions clear and finely chop, fry until Golden brown and add to mashed potatoes, mix well. All this I did not take off. And so everything is clear. To make a savory batter for pancakes anyway, to your favorite recipe. Continue to fry the pancakes in the following way. Pour the batter in a thin layer on a hot, greased pan and fry on one side.

A plate of grease with vegetable oil. Flip the pancake on a plate toasted side up. Put the filling and roll the pancake envelope. To put on the Board.

Thus make all the pancakes. A plate periodically lubricated with butter so that the pancakes do not stick.

Herring cut into fillets without skin. To the extent possible, remove all the bones, even the smallest. You can literally deploy the flesh of the fish, pulling bones... Cut fillet into slices, add sour cream and mustard and beat with a blender, ethereal, tender mass.

Add chopped dill and mix. Here and ready our extraordinary sauce!

Pancakes fry in vegetable oil both sides.

Serve hot with herring sauce.