有的时候，baking soda 和 baking powder 混起来用最好，但是混合的比例要通过试验找到。这恐怕是烹饪高级班的把戏了吧。
Q. What Is the Difference Between Baking Soda & Baking Powder?
A. Both baking soda and baking powder are leavening agents, which means they are added to baked goods before cooking to produce carbon dioxide and cause them to 'rise'. Baking powder contains baking soda, but the two substances are used under different conditions.
Baking Soda
Baking soda is pure sodium bicarbonate. When baking soda is combined with moisture and an acidic ingredient (e.g., yogurt, chocolate, buttermilk, honey) the resulting chemical reaction produces bubbles of carbon dioxide that expand under oven temperatures, causing baked goods to rise. The reaction begins immediately upon mixing the ingredients, so you need to bake recipes which call for baking soda immediately, or else they will fall flat!
Baking Powder
Baking powder contains sodium bicarbonate, but it includes the acidifying agent already (cream of tartar), and also a drying agent (usually starch). Baking powder is available as single-acting baking powder and as double-acting baking powder. Single-acting powders are activated by moisture, so you must bake recipes which include this product immediately after mixing. Double-acting powders react in two phases and can stand for a while before baking. With double-acting powder, some gas is released at room temperature when the powder is added to dough, but the majority of the gas is released after the temperature of the dough increases in the oven.作者: OO 时间: 2006-7-28 16:55
一个实用型, 一个专业型, 非常感谢. 我准备去买盒baking powder了.作者: liz 时间: 2006-7-28 21:05
我总是不求甚解的死记: BAKING POWDER类似化学的蓬松剂, YEAST是生物类的发酵剂....这回也跟着受教育了...SODA我基本上不用,因为太难掌握那个量了,不过有种SODA可以用来洗纺织品的,我常常在洗衣服的时候放点...