Hazelnut cake

 Recipe ingredients: 1 cup butter 1 1/4 cups granulated sugar 5 egg yolks, well beaten 2 cups flour 3/4 teaspoon baking soda 1 1/2 teaspoons baking powder 1/2 teaspoon salt 1 cup sour cream 1 3/4 cups finely ground hazelnuts 6 egg whites  Recipe method: Cream butter, sugar and egg yolks. Sift dry ingredients together. [...]

Source: http://cookingsecrets.org/cake/hazelnut.html

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