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Mar 18, 2014 06:27 AM

Warming food in the oven on ceramic plates: How hot is safe, what temperatures are ideal, and should food be covered w/ foil or not?

Hi I have tried searching for answers to this without much luck.

I often will want to, for example, re-heat a large serving of food that is sitting on a ceramic/glass plate. This is a pot roast with vegetables that is too big to put into a standard square pyrex for instance.

I have the oven at around 280. I'm curious about two things:
Is this a good warming temperature? Too hot? Not enough heat?

And then I'm curious if there is a temperature generally regarded as safe when heating ceramic or glass plates. Obviously 300 degrees or higher probably wouldn't be safe, I'm curious what ranges of temperatures are ideal for making food warm or hot again and then what are the max temperatures safe for the safety of the plates? I would hate to have the food in there for an hour at 170 (lowest oven goes) only to find out the food isn't warm at all.

Thank you!

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  1. Hey I'd like to ask one more question:

    When re-heating food sitting on a plate in the oven, is it better to wrap in foil or leave out in the open?
    If it depends on type of meal, this particular meal is a pot roast with vegetables.

    Thank you!

    1. 280 is very high for warming and will likely dry out whatever you put in there. Don't go any higher than 200 and cover with foil.

      1 Reply
      1. re: ferret

        hey thank you. funnily enough i had just pushed it down to 205 before reading your comment on a second-guess.

        what also adds into this equation is oven calibration! i know with our oven we found it was 50 degrees off.

      2. Is it Celsius or Fahrenheit

        1. Ceramic ware is generally fired to about 2400 degrees F in the making process. 300 degrees isn't going to phase it. However, what is a problem is thermal shock - going from hot to cold. Don't take a plate of food directly out of the fridge and put it on a hot rack in a hot oven. That goes for glass/pyrex, too. And when taking it out of the oven avoid putting it on a cold surface.

          Very often I'll put a ceramic baker on a sheet pan and put the whole thing in the oven. As the sheet pan warms so does the baker avoiding the whole thermal shock thing. I'd do this with your plate.

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