From Bernal Diaz del Castillo’s The Memoirs of the Conquistador:

Indeed, hardly a day passed by that these people did not sacrifice from three to four, and even five Indians, tearing the hearts out of their bodies, to present them to the idols and smear the blood on the walls of the temple. The arms and legs of these unfortunate beings were then cut off and devoured, just in the same way we should fetch meat from a butcher’s shop and eat it: indeed I even believe that human flesh is exposed for sale cut up, in their tiangues, or markets.