Grilling in the park today I started to wonder just how implausible a portable battery-powered grill would be. There are of course a lot of parameters in this question, so let's narrow it down for now: How much energy does it take to cook a steak?
To be a bit more specific let's say a 2.5cm thick steak to a core temperature of 63°C. And since we probably need one more measurement, let's say it's circular with a radius of 5cm.
Everything from numbers for cylindrical steaks in a vacuum to precisely the numbers that are needed to get an actual tasty steak would be interesting.