Hopefully this should be fairly easy to answer…
I made some yummy Belgium waffles this morning (Stevia worked surprisingly well as a sugar substitute in this case) and I observed that the waffle iron I was using didn’t operate on a simple timer.
The one I have turns on a little red light when you plug it in and when your waffle is done cooking, the light goes out [and the heating element goes off].
Is there a thermometer in there that keeps it at a certain temperature and when the batter hits the grill, it lowers the temp and when it is done baking, the temperature is back to ‘normal’? Maybe it’s this in conjunction with a timer?
Oh, while I’m at it - how do rice cookers work? By a timer that changes due to the weight of the rice/water?