Yes, but few people know that, so this still sounds impressive.
I suspect I could do that 'cook fish in ice' demo in my home microwave after a few practice runs. The trick will be having the whole block of ice at -1C so the ice is solid, but the slightly salty water within the fish's body is not frozen, and therefore absorbs microwaves really well.
Adding a little gelatine to the water will probably make it work even better, because then convection currents won't eat away at the ice so quickly.
I suspect I could do that 'cook fish in ice' demo in my home microwave after a few practice runs. The trick will be having the whole block of ice at -1C so the ice is solid, but the slightly salty water within the fish's body is not frozen, and therefore absorbs microwaves really well.
Adding a little gelatine to the water will probably make it work even better, because then convection currents won't eat away at the ice so quickly.