1, when picking sweet potatoes, we try to choose the size and thickness of the more consistent. Long strips are easier to cook.

2, the oven preheated 220 degrees Celsius. Groundnuts rinsed with water, while using a loofah brush to brush all the crevices of the sweet potato skin, rinsed with water.

3, with kitchen paper to sweet potato surface water dry, with a clean ordinary kitchen rag can also be. Use a clean, ordinary kitchen rag to dry the surface of the sweet potatoes, but leave the skin of the sweet potatoes dripping.

4, the baking dish spread a layer of tinfoil, I'm used to matte side up, dry the sweet potatoes on the tinfoil, try to spread out, do not overlap.

5, the oven temperature is still set at 220 degrees. Set the time about 60 minutes. If it is a round sweet potato should be baked 10 minutes more. About half an hour or so, the whole house has smelled a rich and sweet flavor!