hello i want to create a stove which uses briquettes or wood for cooking at my remote house which has no access to gas nor electricity. So currently i am looking for an affordable insulator so as to attain less heat loss. Can you suggest any insulator.
Conceptually what you are looking for is likely Fire Bricks depending on your location you might be able to get them from lowes, amazon etc.
That being said, all cooking indoors should be done inside a well vented stove, and there are many commercially available wood stoves that allow you to cook on the top easily.