When folks walk into the LynLake Brewery in Minneapolis to fill up their growlers, they are usually toting traditional glass jugs. This week, we put a made-for-the-outdoors growler to the test with one of LynLake’s beer experts.
The Miir Growler is a 64-ounce, vacuum-insulated, stainless-steel vessel with an airtight cap that seals your suds cold for up to 24 hours.

For this test, I handed it over to Will Dhonau at LynLake and he was kind enough to fill it up with the brewery’s Ponyboy Gold Ale. Dhonau offered a few observations on the $59 Miir product.
Tight Seal — Dhonau noted the Miir growler felt “sturdy and looks cool as hell, and it seals up nicely.” This is important because the seal on a growler is essential to keeping your beverage carbonated and cold.
Leak-Proof Cap — Throw it in a backpack and the Miir will not leak, even if tipped upside-down. This is not the case with a common glass growler, which often use easy-to-remove twist caps.
Unbreakable — The durability of steel versus glass is obvious. A metal growler can take a ton of abuse. It’s built to be transported in a car, backpack, even on the back of a yak heading deep into the wilderness.
Premium Purchase — At $59, the Miir costs five times what an average glass growler can cost. (Feel-good aside: For each growler purchased Miir supports a charity that “provides one person in need with clean water for an entire year.”)

