The "Japanese Mont Blanc", a famous autumn confection of Shichijo Ganshundo, is made of chestnut yokan with marron glace and chestnut kinton (sweetened sweetened chestnuts) sprinkled on top.
I actually purchased and tried "Wa-Mont-Blanc," a famous autumn confection sold by Shichijo Ganshundo. The word "Wa" is written "Wa" and reads "Yawaragi.