It's ambiguous, as the others say. I learn from Googling that sowbelly, cornmeal, and molasses or sorghum syrup were basic, cheap subsistence food, and that sowbelly is essentially pure fat. I think it's even possible that sowbelly and cornbread might even have been stirred up together before putting syrup over the mixture; one Google hit mentions "syrup mixed with hog grease rendered from the hog fat and baked corn meal, called 'hoe cake.'" Another Google hits mentions, someone, as a child, being sent to a store to buy a dime's worth of sowbelly "and the plea, "Miss Agnes, Maw says send her some this time without no nipples in it."