I got the idea for making Boston brown bread when I saw several big cans of B&M Brown Bread in my mother’s kitchen cupboard the other day. Bread in a can — how weird is that? It’s surprisingly edible, and might be just the thing to stock for the next hurricane. But if you live outside of New England, good luck finding it. “I know what you’re talking about, we don’t have it, and you’re the first person who’s ever asked for it!” said my local grocer.
I wanted to make this bread from scratch anyway, since it dates back to colonial times, or nearly so. Wheat flour was scarce in the American colonies, so “make-do” breads were made from other flours, or a combination of wheat and other flours. Boston brown bread — called just brown bread in New England — contained rye flour, wheat flour, and cornmeal. These were mixed with molasses and buttermilk, and the bread was steamed in a kettle over a fire.