Boston baked beans enjoy a long and popular heritage: They were traditional fare for Saturday evening meals among Puritan families in Boston in colonial days. The leftovers were then eaten as an accompaniment for Boston Brown Bread on the Sabbath when cooking was not allowed. The tradition of Saturday night baked beans is still alive in many Boston homes today. One theory is that baked beans were introduced to the Pilgrims by Native Americans who cooked beans in pits, using bear fat and maple syrup. Another is that New England seafarers brought the idea for the dish back with them from Africa. Whatever their origin, baked beans make a fine side dish for the steak and potatoes in this recipe.