From what I read, the MMs come in Maple and Cherry, but keep in mind these are just the stains, not the trees.
They are made from the same wood as the stem, which is (Maine?) Birch. Also, if the off-taste you're getting is at the end of the bowl, it's most likely the stem - if you've smoked cobs down to the stem-shank, you know what I mean. It burns away completely eventually, and if you don't let any cake build in the bottom that's probably the only way to burn one out. Anyway, if you get that end-of-the-cob-bowl taste from your Ozark from the start, something is off, I'd say...
Shouldn't burn out the side anyway, but after a bit of cake, that taste would be gone regardless.