Grate the zest from the orange on a fine grater. Squeeze the juice from the orange itself. In the butter-egg mass, pour the chopped almonds (not in small pieces, do not turn into flour), zest, candied fruits and pour in the juice. Mix everything well.
Then mix the flour with baking powder and sift into the egg-butter mass, to which nuts and candied fruits have already been added. Mix well.