Value Per Nutrient Food 4.07 mg 100 grams Niacin Rolls, dinner, wheat 4.07 mg 100 grams Niacin Pork, fresh, shoulder, blade, boston (steaks), separable lean and fat, cooked, broiled 4.07 mg 100 grams Niacin Beef, rib, small end (ribs 10-12), separable lean and fat, trimmed to 1/8" fat, prime, cooked, broiled 4.07 mg 100 grams Niacin Beef, short loin, porterhouse steak, separable lean and fat, trimmed to 1/8" fat, all grades, cooked, broiled 4.07 mg 100 grams Niacin English muffins, plain, enriched, with ca prop (includes sourdough) 4.07 mg 100 grams Niacin Seeds, cottonseed flour, partially defatted (glandless) 4.06 mg 100 grams Niacin Potatoes, au gratin, dry mix, unprepared 4.06 mg 100 grams Niacin Pork, fresh, shoulder, blade, boston (roasts), separable lean and fat, cooked, roasted