Established in 2015 in Oceanside, CA, Mason Ale Works was founded by San Diego’s foremost craft beer hospitality professionals. Renowned for their exceptional ales and lagers, Mason Ale Works offers standout drinks such as a crisp Mexican-style lager, a perfectly balanced West Coast IPA, and a range of top-tier hazy IPAs. Consistently pushing the boundaries of craft beer, Mason brews over 100 different beers each year. Mason Ale Works: Craft Built.