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?
Are you channeling your best self with this comment? (If you're not sure, check out our Code of Conduct.)
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.
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.
I think you can. Does it say on the bottom of the cups?
If the cups are oven safe, absolutely.
Part café, part community center.
Every Type of Italian Bar
Chuseok, or Korean Thanksgiving
What's New in the Neighborhood
How to Stay Present
The Hits Keep Coming