Whisk egg whites and confectioners' sugar until very firm. Combine hazelnut flour, confectioners' sugar and flour.
Whisk egg whites and confectioners' sugar until very firm. Combine hazelnut flour, confectioners' sugar and flour.
将蛋白与糖打发后加入已混合过筛的榛果粉、糖及面粉混合搅拌。