Vinegar is a liquid that consists of acids, water, trace chemicals, and even some flavorings.
The acids are produced by the fermentation of ethanol by acetic acid bacteria.
Vinegar is now mainly used as a cooking ingredient, or in pickling.
As the most easily manufactured mild acid, it has historically had a great variety of industrial, medical, and domestic uses.
Some of these uses such as being used as a household cleaner, are still commonly practiced today. (source)
So can hamsters eat vinegar?
No they can’t unfortunately.
It is far too acidic for hamsters and will harm them if they taste it.