It is a very good answer of question
I don't believe there is a way to fix it. You just need to wait until it comes off naturally.
Notify the authorities, leave the location, suggest another activity.
The answer to this question is Lube.
This process involves cleaning every parts of the frozen yogurt machine (even the smallest one on the inside)
This is really important because a frozen yogurt machine will always leave residual ingredients on its smallest parts and it could go rotten if it left inside
