Beat the yolks with margarine and a pinch of salt, beat the egg whites separately, mix the baking powder with the flour, put it over the yolk, add water, essence, jam and chopped or finely chopped walnuts.
In a saucepan put 1 tablespoon of margarine 1 tablespoon of cocoa and 5 tablespoons of sugar and let it melt, stirring constantly so that it does not stick. From this mixture we stop when we take out the cake.
Incorporate the egg whites with the rest of the dough, stirring from the bottom up, pouring part of the icing and mixing, then take a tray, put baking paper and pour the composition, the oven must be preheated. Keep in the oven for 30-35 minutes. we were trying with a toothpick.
After removing it from the oven, let it cool and cut it. Pour the icing on top with a spoon.