Mixed Fermentation Farmhouse Ale with Spelt, Oats, and Rye. "Circle of Fifths is a bright, tart, and rustic mixed-culture multigrain farmhouse ale. We used spelt, rye, and oats along with a blend of noble hops and aged hops; and we blended oak-fermented sour beer together with fresh hoppy saison to create a coupage that displays brett funk, lactic tartness, farmhouse esters, and continental hop character." Brewed by Grimm Artisanal Ales