You can not eat them
Then they can go mouldy, unless they are in the freezer, in which case they can either dry out into a husk or stay semi-edible.
Anyway, the whole concept of potato waffles summarises just how versatile pressed floor sweepings can be...
(
Maximinimus you stick around I'll make it worth your while,
Mon 1 Jun 2009, 15:00,
archived)