Pacific Brewing & MaltingFrom Pacific Brewing & Malting: Potomac Oatmeal Stout debuts today! The Potomac Sample Room was located at the Pacific Brewing & Malting Co. brewery on Jefferson Street in Downtown Tacoma over 100 years ago. It was Tacoma’s original tap room. Our Oatmeal Stout is dark, almost black in color with a creamy head and silky smooth mouth-feel. Smooth and drinkable with a nice chocolate finish.