Steam thinly sliced sweet potatoes for about 20 minutes or till soft. Mash them while hot with a fork, add low fat milk and butter, mix well, set aside.
First sieve flour and green powder, fold in brown sugar, then slowly add egg and milk stir well, then add 1 tbsp melted butter, mix well. Pass through a sift and rest for 10 minutes.
Spread little butter on frying pan at medium small heat, pour in a ladle of batter and spread evenly, let the pancake stand for about 1 minute.
Place pancake on the rolling mat. Add mashed potato at one side of the pancake and roll up. Seal the opening with a little butter. Turn the opening downward and put in the fry pan, fry slightly.
Cut pancake roll into pieces with a sharp knife and dust some green tea powder on it before serve.recipe adapted from 懂得吃就能保青春
Recipe by Anncoo Journal at https://www.anncoojournal.com/sweet-potato-green-tea-pancake-roll/