Coming shortly after the news that the mafia is running a fake olive oil racket in Italy, the FDA is now warning cheese lovers that their Parmesan might be not just fake but made of—wait for it—wood bits.
The only way you get that additive is if you buy it in the aisle where the pasta and sauce usually are. Cheese spoils easily, so when in doubt go to the refrigerated section and buy a chunk there. If you grate it yourself (and sing while you grate it, something my Mom used to make me do so I wouldn’t eat the cheese) in a microplane, a little bit goes a long way.
Today’s filtration membranes have nanoscale pores that are not something you can manufacture in a garage very easily. The idea here is that we don’t need to fabricate a membrane, because it’s easily available. You can just take a piece of wood and make a filter out of it.