Chocolate, dark, 70-85 percent cacao solids, value per 100 grams is 11.90 milligrams of iron. Beef, bottom sirloin, tri-tip roast, separable lean and fat, trimmed to 0″ fat, all grades, cooked, roasted, value per 100 grams is 1.66 milligrams of iron. Beef, ground, 70 percent lean meat / 30 percent fat, crumbles, cooked, pan-browned, value per 100 grams is 2.48 milligrams of iron.