[member=2128]Womble[/member] : thanks for the "what can happen with a pressure cooker" pic - looks like a hob model and "Oh dear!"
Thankfully so many extra safety features built into newer ones, especially the electric cookers.
I was just about to fork-out for an Instant Pot myself (a stainless-steel liner pot is really the best way to go), but, as reported, the old combi' oven decided to give up the ghost. A good new combi' microwave (not exactly cheap) had to be 1st priority.
I was sorely tempted to pay a bit more for a "flatbed" combi' oven model (no turntable), but someone reported their ceramic flatbed cracked after just 3 yrs (as I recall) and was thereby made irreparable/useless. I'll leave that technology aside then until the next microwave oven replacement (if ever).
So my next concoction of chilli beans will be postponed: I love my chilli beans (and can/could eat them over and over), but the last chilli bean cook-up, inc' red kidney beans, that I had was the one that immediately preceded my 1st IBS-like episode almost 2 yrs ago. I haven't been right since!
So, before I next eat any significant amount of pulses, I am going to get a pressure-cooker so that I know nasty bean lectins have been thoroughly cooked/destroyed above 100 degrees C.
I read that red kidney beans are the worst, lectin-wise. (I'm not sure about white kidney beans right now.) I'll go take a look idc to make sure my next chilli bean concoction is as low in lectins as can be with the assistance of a pressure cooker, when the bank balance can, once again, accommodate an Instant Pot purchase.