Stewing/Baking Hen - a mature laying hen 10 months to 1 1/2 years old. Since the meat is less tender than young chickens, it's best used in moist cooking such as stewing.
Which ever you use, make sure to follow the recipe and use in moderation because they can make a big difference. Baking soda produces a crispy, thin cookie while baking powder creates a fluffy, soft...
Baking powder generates carbon dioxide bubbles when mixed and again when heated. This is the only thing that makes the dough rise in recipes that don't use yeast.