Value Per Nutrient Food 3.88 mg 100 grams Niacin Mushrooms, shiitake, raw 3.88 mg 100 grams Niacin Beef, chuck eye Country-Style ribs, boneless, separable lean and fat, trimmed to 0" fat, all grades, raw 3.87 mg 100 grams Niacin Beef, chuck, under blade pot roast, boneless, separable lean only, trimmed to 0" fat, all grades, cooked, braised 3.87 mg 100 grams Niacin Pork, fresh, shoulder, (Boston butt), blade (steaks), separable lean and fat, cooked, braised 3.87 mg 100 grams Niacin Mushrooms, shiitake, stir-fried 3.87 mg 100 grams Niacin Pork, cured, ham and water product, whole, boneless, separable lean only, unheated 3.87 mg 100 grams Niacin Beef, chuck, mock tender steak, boneless, separable lean and fat, trimmed to 0" fat, select, cooked, braised 3.87 mg 100 grams Niacin Pork, cured, ham and water product, whole, boneless, separable lean and fat, unheated