Value Per Nutrient Food 5.29 mcg 100 grams Vitamin B-12 Cereals ready-to-eat, frosted oat cereal with marshmallows 5.29 mcg 100 grams Vitamin B-12 Lamb, variety meats and by-products, spleen, cooked, braised 5.29 mcg 100 grams Vitamin B-12 Cereals ready-to-eat, chocolate-flavored frosted puffed corn 5.28 mcg 100 grams Vitamin B-12 Beef, shoulder top blade steak, boneless, separable lean and fat, trimmed to 0" fat, select, cooked, grilled 5.25 mcg 100 grams Vitamin B-12 Cereals ready-to-eat, GENERAL MILLS, CINNAMON TOAST CRUNCH 5.25 mcg 100 grams Vitamin B-12 Mollusks, conch, baked or broiled 5.23 mcg 100 grams Vitamin B-12 Beef, chuck, shoulder clod, top blade, steak, separable lean and fat, trimmed to 0" fat, select, raw 5.21 mcg 100 grams Vitamin B-12 Ostrich, outside leg, raw