yeah, that corn serves the same purpose as rice, BTW.
But to be honest, the popular German beers here (St Pauli Girl, Becks) that follow the reinheitsgebot are not very good. I'd rather drink US industrial beer.
But the corn doesn't detract from the flavor the way rice does. What I mean is, rice seems to be neutral or negative, flavorwise, whereas corn can tend to be a neutral to small positive.
And the exception to that is Miller Genuine Draft, which to my palate seems like the juice from a can of Niblets.