First of all, it is very important to stay away from combustible materials, and there should be no paper combustible materials beside them.

Secondly, it depends on whether you use solid alcohol or liquid alcohol:

You can't pour too much liquid alcohol at first, about half to two-thirds. Never add alcohol directly at the end of the drink. Finally, when it is bubbling, take it out of the pot. The concentration of residual alcohol is not high, which may lead to ignition after adding alcohol, so dump the remaining alcohol, add alcohol and ignite it for further use.

Solid alcohol needs to tear off the plastic bag and rekindle it. It is difficult to remove the plastic bag residue from the pot.

Finally, don't drink too much, and put as much as you need every time. Be careful not to eat too much or use it often.