Turn on the oven at 200 degrees. Whisk 3 eggs with the sugar until obtain a homogeneous foam.

Add a Cup of flour. On top of the flour, pour soda and will extinguish it with vinegar.

The resulting mass whisk until smooth.

Then on a baking sheet lay out parchment paper (it is possible and without it. I both tried. Paper a little easier to fold get), grease it softened butter and evenly across the form spread the dough. Put the pan in the oven and raise the temperature to 230-240 degrees(experiment, because all ovens are different).Roll bake up to 7 minutes (assuming that the oven was well pre-heated to 200 degrees. Also plays a role the size of the form! I used the baking sheet to a standard width oven. If Your form is less than the perimeter of the batter maybe it's time to get grilled, and fold the dough so the thickness will be difficult. Better divide it into two parts).

Meanwhile grind a Cup of walnuts to desired size.

Get roll until it dried. Spread boiled condensed milk (I got 2/3 of a half-liter jars)and sprinkle with chopped nuts. Can be baked sponge cake cut in half and make it with 2 different fillings, if there is a dispute about taste:) Now, quickly turn the dough into a roll while it cools.

Cook with love for loved ones! All a pleasant appetite!