I've never, ever refrig ed soya. I am rather alive, although not what I used to be. Oyster, always
in the frig. And my fish sauce, in the frig but they are both so old, 5 years maybe. With all that salt, in the frig, fridge, I would think that they survive.
I've sure noticed that so many labels are now demanding that we refrigerate the product, whereas, when those products grew up in the 50s and 60s, no one did.
On the other hand, we think of sugar as being a stabilizer but I learned in the Caribbean that even the sugary liqueurs can get destroyed by a daily onslaught of heat.
I think I can bring any discussion back to booze.