Product introduction:
Cocoa powder is the solid powder form sold as the end product of cocoa solids, which is the remaining ingredient after extracting cocoa butter from cocoa liquor, which has been ground into a liquid form from roasted cocoa beans. The extracted cocoa butter accounts for 50% to 57% of the weight of cocoa beans, giving chocolate its unique melting characteristics.
Cocoa powder contains flavanol antioxidants, the amount of which is reduced if the cocoa is acid-reduced. The flavonoids in cocoa have health benefits.
Difference between cocoa powder and chocolate?
Bar chocolate combines cocoa solids and cocoa butter along with sugar and some form of emulsifier such as lecithin to hold the ingredients together. Cocoa powder contains primarily cocoa solids, with only about 10 to 15 percent cocoa butter vs. the 50 percent or more in chocolate.
Higher-quality cocoa powder retains slightly more cocoa butter than lesser brands. Cocoa powder is the missing ingredient in so-called "white chocolate," which is produced by combining cocoa butter and sugar (plus an emulsifier) but no actual cocoa solids.
Cocoa powder is not the same thing as instant cocoa mix, which, when combined with hot water or milk, instantly produces a mug full of hot cocoa. Typically sold in packets, this product contains cocoa, sugar, dehydrated milk, and other ingredients. But you would not use it to bake brownies or chocolate cake. And don't try to make a cup of hot chocolate by simply adding hot water to unsweetened cocoa powder.

How to use cocoa powder?
To get the most out of your cocoa powder, mix it with a bit of hot liquid, such as water, coffee or butter, first before adding it to the rest of your ingredients. This technique, known as “blooming” brings out the best in cocoa powder and unleashes its ultra-chocolatey potential. Recipes for brownies, cakes, and beyond that call for cocoa powder to be bloomed, translate into bigger, more intense chocolate flavor in the finished baked good. Blooming can also make the cocoa powder dissolve more easily.
When trying to add cocoa powder to a recipe that doesn’t already call for it, it is important take its starch content into consideration. The fine particles found in both cocoa and chocolate can act like flour in a recipe. When you convert a plain cake recipe to a chocolate cake, if you use cocoa, you need to consider it as flour. Subtract the amount of cocoa that you use from the quantity of flour; otherwise the cake will have too much flour and may be dry, and no one wants a dry cake.
Cocoa powder may be included in several foods and beverages like:
What are the properties of cocoa powder?
Several studies showed that cocoa powder might have the following properties: