What Does Clabber Mean?

When I read the instructions for making buttermilk, I noticed that the instructions say to leave the mixture sitting out at room temperature for several hours, until the milk has "clabbered." I wondered what that means, and if it has anything to do with how Clabber Girl baking powder got its name. Well, I looked it up, and the answer to both questions is just what I suspected. Clabber means when milk goes sour and curdles, and the famous baking powder got its because of the leavening action of sour milk. I'm not explaining it very well. You can read more about it here. Actually, the Clabber Girl website has some fun family activities and science experiments to do with young children, plus some recipes to try. You may like to check it out. In the meantime, I just mixed up my buttermilk concoction. My buttermilk is already five days past the expiration date, but I figure that it was sour milk to begin with, so it shouldn't matter if it's a little more sour. It had separated into a liquid on top, which I think would be a form of whey, but I just shook the carton until it was mixed up well and then used it anyway. Maybe I'll use it to make some sour dough waffles in the morning. I'll let you know!