current california law allows micro-breweries to re-fill growlers that are from their own brewery. growlers are ceramic or glass, and hold about a half gallon. they are re-sealable and are adorned with the logo of the brewery they are purchased from. a proposed law would allow micro-breweries to fill the grumblers from other breweries and simply place a sticker labeling the new contents of the grumbler over the old one. the law would promote resources conservation and recycling.