So, a colleague guilted me into taking home a "bag of goo," otherwise known as starter for Amish Friendship Bread.  The recipes all assume you'll pass more bags of goo on to unsuspecting friends.  It appears to be more of an expanding "chain-letter" sort of recipe than a nice, tame (ha!) lives-in-your-fridge, much more flexible, regular sourdough starter.

I have, however, founds some variations that explain proportions for just using up the whole bag of starter without making it reproduce to plague your friends.

So, unless someone actually WANTS a bag starter goo, I'm going to use it all up.  If you are coming to my house for Christmas Eve, probably plan to leave with a loaf of Friendship Bread.

Just lettin' ya' know.