In short, Concentrated Mushroom powders are extracts made from 100% fruiting body mushrooms. They are more potent then steam extracted mushroom products, with a wider variety and higher concentration of active compounds.  Concentrated Mushroom Powder: This process uses a water and/or alcohol menstruum to extract the mushrooms' medicinal compounds. The resulting liquid is spray dried, producing a highly-concentrated, water-soluble powder. This product is easily dissolved in liquid or can be added to foods and drinks.
Suggested use: 1/8-1/2 teaspoon, 1 time daily. Steam-Extract Products: The entire mushroom is steam-treated to extract the medicinal compounds and make them bioavailable. It is then ground into a fine powder for easy consumption.