I have the Witbier recipe from BCS which I've brewed the last 2 summers and like it. For 10 gal it is 9.5# pale malt, 8.5# flaked wheat, 0.5# light Munich, and 2.0# flaked oats.
I have a half a pound each of flaked corn and flaked barley sitting around with no plans to use them, and was wondering what would happen if I just toss them in the mash, maybe reducing the pale malt by a pound, or half a pound. That would change just 5% of the grain bill, and I probably wouldn't notice it, right? But at least would use up two things that would otherwise just sit around.