Beit Or ~ The House Of Light

Jason writes...

I have a question regarding what is and is not chametz. According to most sources that I have read, chametz is leaven, not just yeast. During the Passover and the Feast of Unleavened Bread, we are not to have any chametz in our homes or eat it or even own it. Sodium Bicarbonate (aka - Baking Soda) is a leavening agent and, therefore, we should not eat or own it.

So here's my confusion: Manischewitz Matzo Ball Mix has sodium bicarbonate in it and yet it claims to be Kosher for Passover.

How is this possible?

Todah v'Shalom,

Jason