LIFE - this living ale is naturally carbonated to enhance complexity, refinement, and to encourage aging. LIMB - for the birch and maple trees, who’s syrup gives this unique ale its flavor and symbolizes the collaboration between Sierra Nevada and Dogfish Head. We are proud to share our Life and Limb with it’s thousands of other branches who collectively comprise the craft brewing family tree. Sip slowly with friends and loved ones; savor long - because one could do better than be a swigger of birches.