Royal Mazurka (Mazurek Krolewski) - cooking recipe

Ingredients

Mazurkas
6 eggs
2 2/3 cups confectioners' sugar
1/2 cup boiling water
3 tablespoons lemon juice, fresh
3 1/4 cups flour
1/4 lb almonds, blanched, peeled, and ground (about 1 cup)
3/4 lb butter, melted
1 cup apricot jam
Icing
2 cups confectioners' sugar, sifted
1 tablespoon warm water
2 teaspoons lemon juice, fresh

Preparation

Mazurkas:.
Preheat oven to 375\u00b0F.
Beat eggs with sugar for 10 minutes, until light and fluffy. Mix water with lemon juice, and add to the eggs in a thin stream while beating. Beat 5 more minutes. Add flour, almonds, and butter alternately. Mix lightly to incorporate.
Divide batter between two 9 X 13 baking pans lined with buttered parchment paper.
Bake for 25 minutes, or until golden.
Cool slightly, then turn them out onto a rack to completely cool.
Meanwhile make icing (directions below).
Spread one cake with jam, cover it with the other cake and spread the icing over the top.
Icing:.
Stir warm water, lemon juice and confectioner's sugar together until the sugar completely dissolves and the icing is smooth. It should be thick enough to coat the back of a spoon. Add more water if necessary. If you get it too thin, add more sugar.