While rooting around in my cellar I dug out a jar of dark Miso premade by Clearspring. It claims to be unpasteurised and organic. Only, I bought it in like 2010 and it had a useby date somewhere in 2012. It still looks completely fine though. Since' I'm generally not to finicky about older food and use my own smell and taste to determine if things are still edible, I'm feeling like eating it. But Miso is an aquired taste and my palate is not yet developed to the the stage to diffentiate between "mmm, strong" and "oy, off" flavours in miso. What I think of as mmm, might still be spoiled or gone bad and I might toss it due to strong flavours that are new to me, but not neccessarily bad.
Well folks, I just decided to take the plunge and plonk some into my lunchtime parsnip soup. It was wonderful. Very dark-earthy tasting and going well with parsnips on that account. So it seems the stuff is practically immortal. If I was wrong, then this will be my last post