How to make purple sweet potato cake roll

People cannot live without food, clothing, housing and transportation every day, which are the most basic things, especially "food", which is related to human life and death. To do well in the "food" aspect, you'd better learn to cook each dish by yourself. So, let me introduce to you how to make the whole purple sweet potato cake roll dish.

It takes careful research to create the purple sweet potato cake roll, and once you know how to make it, you will definitely want to show off your own skills, right? Then don't wait any longer, do it now, you will definitely be able to do it quickly.