Ingredients :

​

* 10oz. (300g) mushrooms, preferably wild varieties which have more flavor.
* 4oz. (110g) sweet butter,
* 1 medium-sized onion,
* The white of one hard-boiled egg,
* 1 tablespoon (15g) breadcrumbs,
* Sprig of parsley,

​

Method :

​

Cook the mushrooms, then cut into very fine pieces, and fry (sauté) in the butter with onion.
Thoroughly mix with the bread crumbs, finely cut egg white and parsley and a pinch of salt.

Prepare the dough and make the uszka:

Take

* The yolk of one fresh egg,
* 1½lb (700g) white flour

Thoroughly mix the flour with egg yolk and a little water.
Knead into soft mass.
Roll out into thin layer, cut into 1½ inch (35mm) squares.
Place portions of mushroom mixture into center, fold over all edges, then fold and stick two opposite corners together.
Cook in boiling water for 5 minutes.

This quantity of ingredients will provide about 40 dumplings.