I like Alton Brown, too, especially for his science of cooking. But here's my take, and I don't mean to be mean, but if you can't even shake anymore out of the bottle you probably have a tablespoon at most in there. At, say, $3.50 for a 12 oz bottle, that's probably less that 2 cents worth of mustard. So pitch it and stop cluttering up your fridge!

We need to get Alton Brown into quilting!

hahahahahahahahahahahahahaha!