I am thinking about making a dessert that calls for baking in ramekins @ 450 degrees. Can I use my Johnson Bros. ironstone coffee cups at that temperature?

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4 Comments

spiffypaws November 14, 2010
If the cups are oven safe, absolutely.
 
mrslarkin November 13, 2010
I think you can. Does it say on the bottom of the cups?
 
Mr_Vittles November 13, 2010
It should be fine. I have used my coffee mugs in the oven plenty of times, from french onion soup to reheating chili. And mine are cheapies from Walmart.
 
Queen O. November 13, 2010
I'm not familiar with that particular dinnerware. Check the manufacturers website for whether it is considered a stoneware product.

In terms of pottery, 'stoneware' is high fire clay and glaze and should be fine at that high a temperature (although not, of course) on a stove top. Earthenware is a lower fired product and I would not recommend that temp.
 
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