Craft brewing shakes the industry like a slow earthquake, with Portland at the epicenter. A new establishment called a “brew pub” catches on, thanks to a change in the law permitting brewers to serve beer on the premises. (It used to be illegal.) BridgePort Brewery and Widmer Brothers Brewing Co. open in 1984; the next year the McMenamin brothers open the Hillsdale Brewery, and in 1985 came the Portland Brewing Co.