To help illustrate why it's so important, let's look at two popular glasses in the bourbon world — the Glencairn and the snifter. As you can see, they're both made of glass and glass only.

Image Credit: Freepik The Pilsner glass is ... This mug can handle heavier usage, making it a durable option for hearty beers. The Snifter glass is perfect for high-alcohol beers.