Wheat, however, the grain used to bake bread back in England was almost impossible to grow, and imports of wheat were far from cost productive. Substitutes in cases such as this included cornmeal. The Johnnycake was a poor substitute to some for wheaten bread, but acceptance by both the northern and southern colonies seems evident. As many of the New Englanders were originally from England, game hunting was useful when they immigrated to the New World. Many of the northern colonists depended upon their ability to hunt, or upon others from whom they could purchase game. Hunting was the preferred method of protein consumption. This was opposed to animal husbandry, which required much more work to defend the kept animals against raids. Commonly hunted game included deer, bear, buffalo, and wild turkey. The larger muscles of the animals were roasted and served with currant sauce, while the other smaller portions went into soups, stews, sausages, pies, and pastries. In addition to game, colonists' protein intake was supplemented by mutton. The Spanish in Florida originally introduced sheep to the New World, but this development never quite reached the North, and there they were introduced by the Dutch and English. The keeping of sheep was a result of the English non-practice of animal husbandry. The animals provided wool when young and mutton upon maturity after wool production was no longer desirable. The forage-based diet for sheep that prevailed in the Colonies produced a characteristically strong, gamy flavor and a tougher consistency, which required aging and slow cooking to tenderize. A number of fats and oils made from animals served to cook much of the colonial foods. Many homes had a sack made of deerskin filled with bear oil for cooking, while solidified bear fat resembled shortening. Rendered pork fat made the most popular cooking medium, especially from the cooking of bacon. Pork fat was used more often in the southern colonies than the northern colonies as the Spanish introduced pigs earlier to the South. The colonists enjoyed butter in cooking as well, but it was rare prior to the American Revolution, as cattle were not yet plentiful. Prior to the Revolution, New Englanders consumed large quantities of rum and beer, as maritime trade provided them relatively easy access to the goods needed to produce these items. Rum was the distilled spirit of choice, as the main ingredient, molasses, was readily available from trade with the West Indies. Further into the interior, however, one would often find colonists consuming whiskey, as they did not have similar access to sugar cane.