What is the purpose of the hinged lid on beer steins?

What is the purpose of the hinged lid on beer steins?

The hinged lid on beer steins serves several purposes - one of them - to keep the bugs out! Here are the main reasons for its inclusion: Protecti...
What is the purpose of the hinged lid on beer steins?

What is the purpose of the hinged lid on beer steins?

The hinged lid on beer steins serves several purposes - one of them - to keep the bugs out! Here are the main reasons for its inclusion: Protecti...