If you put a hot drink in a Thermos, it keeps it hot.
If you put a cold drink in, it keeps it cold.
I'm not bothered any more about how the flask knows whether to keep it hot or keep it cold. I'm just happy it does.
Yesterday (I think) I ping'd (tm Chard) a Roast beef and Yorkshire Pud dinner.
The destructions on the box said not to ping the Yorkshire Pudding, but oven it for whatever minutes at some numbers.
So - I set the "oven" part of it to bake (?) the pud. All well and good.
Pud out, turn it to "ping" mode.
"Put the meal and gravy in a tray and ping for 3 ish minutes."
Fecking thing melted the tray ! ! ! ! !
Now - if a £10 flask knows the difference between hot and cold, how come a £200 so called tossed off microwave/grill/conv(:confused/combi combo thingy doesn't know not to melt my plastic trays???
:confused: