The Book of Household Management by Mrs. Beeton

mankind began to depart from their primitive habits, the flesh of swine was the first that was eaten. For several ages, it was pronounced unlawful to slaughter oxen, from an estimate of their great value in assisting men to cultivate the ground; nor was it usual to kill young animals, from a sentiment which considered it cruel to take away the life of those that had scarcely tasted the joys of existence. At this period no cooks were kept, and we know from Homer that his ancient heroes prepared and dressed their victuals with their own hands. Ulysses, for example, we are told, like a modern charwoman, excelled at lighting a fire, whilst Achilles was an adept at turning a spit. Subsequently, heralds, employed in civil and military affairs, filled the office of cooks, and managed marriage feasts; but this, no doubt, was after mankind had advanced in the art of living, a step further than _roasting_, which, in all places, was the ancient manner of dressing meat.