Our Core of Four series celebrates and highlights the four core ingredients that make beer so great: malt, hops, yeast and water. Element 3: Yeast. Brewed in collaboration with our friends at Imperial Yeast in Portland, Oregon. Brewed in the German Hefeweizen style to feature the unique yeast profile on a simple barley and wheat base. A portion of all sales of Element No. 3 will be donated to Hopelink.