Post #1873684

@penguin42 @gigabecquerel I'll add my own guess: acceleration of organic reactions due to microwave heating is thought to occur at least partly through localized overheating, and once there was enough dehydration and condensation of organic byproducts of sugar pyrolysis to form a tiny particle, I suspect that the particle may tend to absorb the microwaves selectively and promote further reaction at the surface of the particle.