According to the size of sweet potato. The cooking time of boiled sweet potato varies with the size of sweet potato. Generally, sweet potatoes are cut into pieces with uniform size of 1 cm, and then boiled for 10 minutes.

But if the whole sweet potato is cooked, it will take 15 to 20 minutes for the palm-sized sweet potato to be cooked after the fire is boiled. It is suggested to poke through the surface of sweet potato with chopsticks. If the sweet potato can be successfully poked, it means that the sweet potato is ripe. If not, it needs to be cooked 1 to about 5 minutes according to the situation.

Extended data:

Practice of roasting sweet potato with rice cooker;

1, choose some sweet potatoes of similar size.

2. Put the sweet potato in water to clean the soil on the surface, and then poke holes evenly on the sweet potato with a toothpick.

3. Put the sweet potatoes into the rice cooker and lay them flat in a row. You can't put two floors.

4. Cover the lid and press the cooking button until the button automatically jumps off.