Hi, I've used speech buble concept in my logos at the moment. Maybe this is not exactly your idea but I wanted to try my chance because imagined that. I hope I didn't misunderstand your brief. I will continue to think something for your logo.
Thanks for getting a start at it. I don't think the speech bubble concept works. It makes it look too cartoon like. I think using the works Growler Fills and the slogan should be the main focus of the logo and if there is a way to incorporate a tap handle filling a growler or something like that it would be closer to what I'm seeking.