A growler is a container or vessel used to transport draft beer). It is typically made of glass, ceramic, or stainless steel and is airtight to maintain freshness for up to a week or more). Growlers are commonly sold at breweries and brewpubs as a means to sell take-out craft beer). They come in a range of sizes, from 32 to 64 ounces, and can be filled right from the tap and topped with a twist-cap that seals in all the hoppy goodness. Growlers are both ecologically- and economically-friendly, and many breweries and beer shops offer custom growlers featuring their logos or can be customized for weddings or other events.

The term "growler" has a few different origin stories, but it is generally believed to have originated in the late 1800s when patrons would use tin buckets to carry beer home from the bar. As the beer sloshed around inside the container, it would make a bubbling noise that people would call growling. The modern glass growler was first introduced in 1989 by Charlie and Ernie Otto of Otto Brothers Brewing Company in Wilson, Wyoming).

In recent years, a new type of container called a crowler has emerged. A crowler is a fillable and machine-sealable beer can that is easier to transport than a growler bottle). However, both growlers and crowlers have their perks, and the choice between them depends on the scenario and beer drinker.