Arne Johnson, brewmaster at Marin Brewing Co. in Larkspur, California (and the winner of this year’s Bistro Double IPA Festival), told me on Saturday that he’s brewed his first quadruple and that it’s in the tank now. He anticipates it will be available at the pub in about six weeks. That would be the week of March 26, the last week of the month. Mark your calendars, it should be worth waiting for.