Cake with Egg Whites

Description
In Romanian: Chec din albusuri

Ingredients

 * 7 - 8 egg whites
 * 10 oz / 300 g sugar
 * 5 oz / 150 g butter or margarine
 * 5 oz / 150 g flour
 * peel from 1 lemon
 * 4 oz / 100 g sliced walnuts
 * butter and flour to grease and dust the pan

Directions

 * 1) Whip the egg whites with the sugar. Gradually add the melted and still warm butter (margarine), stirring continuously.
 * 2) Then add the lemon peel and flour.
 * 3) Place half of the walnuts on the bottom of a buttered and dusted bread pan.
 * 4) Then pour the batter and the remaining walnuts on top. Bake, first at low heat and then increase it.