UC,
That reminds me, I bought a ML kit with a similar flask to yoursas well as a capper, powder measure, ball starter and nipple wrench from the Bass Pro outlet store last year for about $5. I have been trying to figure out what to do with a couple of those items. Now I have a use for the funky little open top powder measure that came in that kit. It looks like a skinny shot measure with just an open top, it should work fine for cornmeal though.
Thanks.