User blog comment:D2r/Unanswered Questions of Redwall/@comment-3462718-20110417161052/@comment-1479469-20110421200216

Even if we assume it's acorn flour, no mention's made of provision for gathering and, importantly, milling the acorns into flour. You can't make flour without a mill, and mills are never mentioned in the series. As for the beaver, I assume that's true, but you have to admit he's something of an enigma.