Based in Portland, Oregon, the Zythos Project makes a very durable growler out of food-grade stainless steel. It’s called “The Bräuler”, and it features a wide, 1.75-inch mouth, a deep-thread cap to hold carbonation inside, and a machined exterior collar that’s compatible with multiple accessories. It comes with a lifetime warranty. It is available for pre-order at the Zythos Project website, the price is to be announced.
