What is a Growler? In the Late 1800’s fresh beer was schlepped from local pubs in small galvanized pails. Rumor has it then when the beer sloshed inside the pail it created a rumbling sound as the pressure from the co2 escaped from the lid. This sound Growled and thus the “Growler” was coined. Simply put it’s a glass jug that we sell/fill with fresh tasty beer.