The skin of Joyo manju (steamed yeast bun with filling) such as 'Oribe Manju' is made of grated yamaimo with sugar and joyo-ko (fine grade wheat flour).
「織部まんじゅう」など上用饅頭の皮は、山芋をすりおろして砂糖と上用粉（細目の米粉）をくわえたもの。