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Can an 'AGA oven' be koshered?

Here are Wikipedia and video explanations of what an AGA oven is. Here's an excerpt from the Wikipedia page:

The AGA cooker is a heat storage stove and cooker, which works on the principle that a heavy frame made from cast iron components can absorb heat from a relatively low-intensity but continuously-burning source, and the accumulated heat can then be used when needed for cooking.

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kiri, welcome to Mi Yodeya! Please note that any advice you see here should be treated as if it came from a crowd of your friends, and all final decisions should be made by your local Rabbi. (-breath-) I look forward to seeing you around! – Double AA Oct 16 '12 at 20:43
You could improve this question by adding more detail about what you know about AGA ovens that makes you wonder about whether they can be koshered. – Isaac Moses Oct 16 '12 at 20:59

From investigating AGA ovens, in theory there is no problem in kashering them.

In practice it's gonna be quite complex. They have a ton of areas, and they are massive with a lot of thermal mass.

In order to kasher them, you have to heat them up quite hot, but because of the thermal mass it's going to take a huge amount of energy and a very large flame. It may be impossible to do it with a regular torch.

For a final answer you should ask your Rabbi about it - but I strongly recommend that you insist he see the oven in person, since it's not a typical oven.

Also, as a practical note AGA ovens are EXTREMELY energy inefficient. Very wasteful, I would not recommend them.

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