From the producer: "Birches PetNat: Frontenac/Marquette (70%/30%), co-fermented on skins then pressed off, bottled at 2 brix, dark red, dry, brambly, blue-fruited, and best served with a solid chill. Disgorged to order (or left a bit hazy and super-effervescent, should you desire!). Dark and deep, but also bright and light on the palate."