What better time of the year for our Imperial Mexican Style Dark Lager with vanilla beans, cocoa nibs, cinnamon and Mammoth’s own Black Velvet coffee? Dos Osos comes out of the tanks ready for us to toast the local bears coming out of hibernation. So as a nod to spring time in the sierra and groggy bears, we are drinking Dos Osos. We’ve been obsessively crafting beers since 1995. Pulling inspiration from our natural surroundings, we boldly blend the best of our local ingredients with the know-how we’ve picked up from years of brewing award-winning beer.