Dr. Oetker Baking Powder is a perfect product for pastries. It contains both sodium bicarbonate and an acidic ingredient. Also, it contains corn starch. Sodium bicarbonate in the product reacts with the acidic ingredient and as a consequence of it, it helps increase the volume of your dough. It does not include gluten, and so you can use it safely. Dr. Oetker Baking Powder consists of five pieces, and one piece of it is enough for 500 grams of flour. Baking powder should be kept in a cool, odorless, and dry place so that it does not lose its physical and chemical properties.