1, sweet potatoes wash and spare, do not peel, the best is to use a toothbrush to clean, while rinsing, while brushing, so that it will be cleaner, and then drain a lot of water on the sweet potatoes.

2, the grill covered with tinfoil, the cleaned sweet potatoes on the tinfoil.

3, preheat the oven at 210 degrees for 10 minutes, then put the sweet potatoes into the middle of the preheated oven, bake at 210 degrees for about 80 minutes (baking temperature and time is for reference only, according to the size of the sweet potatoes and how much to adjust).

4, bake until the sweet potato oozing sugar juice can be.