Lebkuchen Or German Honey Cakes

• 1 egg
• 375 gr flour
• 240 ml honey
• 220 gr brown sugar
• 200 gr powdered sugar (plus)
• 50 gr candied citro (finely chopped)
• 16 ml lemon juice
• 5 gr cinnamon
• 4 gr allspice
• 3 gr nutmeg