Barley malt powder goes great in our homemade "Ovaltine" powder.  Its a pricey ingredient compared to the others, but if you like an old fashioned malt, this is what you want.  This is a smooth and very fine powder.  One pound is equal to about a quart.  After I opened the bag, I poured the rest into a quart jar for storage.  This bag doesn't re seal, so you will need to store it elsewhere.