I've just recently learned about the difference in cocoa powders. This is from the King Arthur Flour site:
There is Natural Cocoa:And from the Penzey's site:
Natural cocoa is the choice when your recipe calls for just plain (not Dutched) cocoa.
22%-24% fat content
And there is Double-Dutch Dark Cocoa:
Our exclusive blend of mellow Dutch-process cocoa and extra-dark black cocoa yields rich, pure-tasting chocolate treats, without the acidic overtone natural cocoa often gives. And at just 10% fat, it's lower in calories and fat than solid chocolate.
Ideal for all of your recipes calling for Dutch-process (European-style) cocoa; as well as icing, candy, and fudge sauce.
Use in any recipe that doesn't specify natural cocoa powder.
Two types of the highest quality cocoa that are almost twice as rich as the grocery store varieties: Natural cocoa is strong, dark and bittersweet-perfect for all baking; Dutch cocoa is processed to temper the natural acidity of the cocoa bean, yielding a smooth, rich and slightly less strong cocoa that mixes more freely with liquid. Dutch cocoa has long been the cocoa of choice for hot chocolate and flavored coffee.Those scientific testers at Cook's Illustrated offer a lot of information to help you decide which one to use.
And then from The Joy of Baking website we have:
Cocoa powder is made when chocolate liquor is pressed to remove three quarters of its cocoa butter. The remaining cocoa solids are processed to make fine unsweetened cocoa powder. There are two types of unsweetened cocoa powder: natural and Dutch-processed.Confused yet? All too much to think about? Well, I own both kinds, and because this recipe did not call for baking powder or baking soda, I used the natural cocoa. I'm quite sure I've never tasted a more chocolate-y brownie, ever.
Dutch-processed or alkalized unsweetened cocoa powder is treated with an alkali to neutralize its acids. Because it is neutral and does not react with baking soda, it must be used in recipes calling for baking powder, unless their are other acidic ingredients in sufficient quantities used. It has a reddish-brown color, mild flavor, and is easy to dissolve in liquids. Its delicate flavor make it ideal in baked goods like European cakes and pastries where its subtle flavor complements other ingredients. Droste, Lindt, Valrhona, Poulain and Pernigotti are some popular brands.
Natural unsweetened cocoa powder tastes very bitter and gives a deep chocolate flavor to baked goods. Its intense flavor make it well suited for use in brownies, cookies and some chocolate cakes. When natural cocoa (an acid) is used in recipes calling for baking soda (an alkali), it creates a leavening action that causes the batter to rise when placed in the oven. Popular brands are Hershey's, Ghirardelli, and Scharffen Berger.
1 1/2 sticks melted butter (3/4 cup)
2 cups sugar
1 teaspoon vanilla
3/4 cup cocoa
1 cup flour
1 cup chocolate chips
1 cup chopped nuts
Preheat oven to 350°F.
Grease a 9x13 pan.
While butter is melting:
Stir in sugar, vanilla, cocoa, and flour.
Add cooled melted butter and mix until blended, but don't over mix.
Stir in chips and nuts.
Pour into pan and bake about 25 minutes, until sides pull away from pan.
Allow to cool before cutting.
Note: It takes a few more minutes than 25. Keep an eye on them.