And apparently you shouldn't freeze your beer mugs, just frost them.
https://advancedmixology.com/blogs/a...t%20to%20waste.
No matter what you do, do not freeze your glasses. If this is the case, you will be drinking an unpleasant and unflavorful beer. Frozen glass will cause a foaming issue because there is a rapid release of carbon dioxide and can cause an interruption in your pouring because the beer can overflow. There’s also a chance that your glass will get stuck in the freezer and can break if forced to be taken out.