・Egg Yolk ・・・×3
・Vanilla Essence・・・a little
Sweet potatoes expose to the water.
Put sweet potatoes to in vessel and pourwater.
Put the lid on the vessel and it in oven on storong fire about 6min.30sec.-7min.
It steam a little and strain before cold.
Add it, tender butter and A, well knead.
Put it in press bag.
It squeeze on small aluminum case.
Its surface thinly spread B by brush.
Put it in oven at 230℃.
It bake about 8min.-10min.