Why should you care about the new Growler USA concept? The beer bar and growlers-to-go concept is currently opening a store every two weeks or so, with 40 already underway, from Texas to Hawaii: founders are looking to open a hundred or so units in the next few months. Stores feature up to 100 craft beer taps, with growler fills where legal. It's a franchise model with a relatively low barrier to entry -- half a mil to open.