Growler

A growler is a reusable container used to transport draft beer from breweries, taprooms, or beer events to consumers’ homes. Common sizes are 32 ounces (one quart) and 64 ounces (about 1.89 liters), though other capacities exist. Growlers are typically made of glass, stainless steel, or ceramic, and are closed with a screw cap, swing-top, or other resealing lid. They are designed to be filled directly from a keg or draft line at the point of sale.

Usage and care: After filling, a growler is sealed to limit air ingress and kept cold to preserve carbonation and freshness. Beer quality declines over time, so growlers are usually best consumed within a few days to about a week, depending on beer style and seal integrity. After use, the interior should be cleaned and sanitized before refilling to minimize contamination. Reusable growlers require regular care to maintain a clean interior and prevent off-flavors.

History and etymology: The modern growler gained popularity in the United States during the craft beer movement of the late 20th century. The exact origin of the term growler is uncertain; explanations range from the sound the jug made when it delivered beer to a reference to a signaling whistle used in some shops.

Regulations and variants: Practices vary by jurisdiction. In many places, breweries may fill growlers with beer for take-home consumption, sometimes with deposits or restrictions on labeling and tamper-evident closures. A related vessel is the crowler, a single-use sealed can filled on site.