Powdered milk is, of course, less expensive than fresh milk and it’s relatively non-perishable. And in terms of nutrients like calcium and protein, dried milk is comparable to fresh milk.
But if you research this question on the Internet, you’ll quickly come across a lot of sources who claim that powdered milk is extremely bad for you because it contains oxidized cholesterol, which is supposedly the most dangerous type of cholesterol.(Well, in truth, it’s just one source, but it’s a source that’s widely repeated.) They also claim that powdered milk is added to all lowfat and fat-free milk in order to give it more body. And they say that there’s no way for you to tell whether or not your milk contains added dry milk because the packagers are not required to list powdered milk in the ingredient list. Pretty scary stuff.
I am not recommending this product.