Do you have a slew of cold or frozen leftovers in the fridge ... out of the microwave has a degree of rubberiness, dryness or mushiness that it didn't have when it went in. Microwaves don't ...
Clearly, as your bog standard microwave oven can only handle at most one kilowatt; the ‘oven’ needed a bit of an upgrade. A 16 kW water-cooled magnetron. Why not over-drive it to 20 kW for fun?