Most dairy alternatives are fortified with calcium and vitamin D, some juices contain B12 or calcium, and many kinds of sliced bread come fortified as well. The best fortified ingredient, though? Nutritional yeast — a magical ingredient fortified with B12 that is used to make vegan cheese sauces, tofu scramble, and anything else you’d like a cheesy flavor for. You’ll even find some vegan fish alternatives fortified with the same Omega-3 fatty acids that are in fish!