What's this on my tofu gan/savory baked tofu?
Whenever I buy tofu gan at my local chinese market, if I leave it in my fridge for more than a few weeks, a viscous sort of goo forms around it in the plastic wrap. It has no smell, washes off the tofu easily, and as far as I can tell, has no taste either (at least once I've cooked it.)
Anyone know what it is? Should I toss the tofu gan and replace with a "fresher" supply?