It's usually electric. If you put the liner on a burning coal fire to stew the soup,

First of all, an open flame will burn the liner black.

Second, it will burn out the coating of the liner.

Third, there are great security risks.

To sum up, it is not recommended that you put the liner on the coal fire to stew the soup. After all, personal safety comes first.

If it helps you, please adopt it, thank you! ! !