But I didn't know that the damned stuff carries on cooking once you take it off the hob. So the outside 5mm was a perfect yellow crunchiness, while the inside burnt to a bitter cinder.
Next time, I will cool the stuff off first then add the bicarb.
Looks like a crap connection may be to blame, and if you don't get it just right, you can get bad information about what time it is. And when you're measuring time in billionths of a second, there's almost no room for error.