dual purpose fireplace question (heating and cooking)
I am moving into an old home, and will be renovating, with the opportunity to install a fireplace or wood stove. I'd like to be able to derive a percentage of our heat from the fireplace, but at the same time, I'd like to be able to have a nice, big hearth with an open fire.
Here is why: I am completely addicted to cooking in open fireplaces. I've got old hearth cooking implements, etc.
On the big, open fireplace side of things, great for cooking in, great for hanging out by, there is something like the Lennox prefab estate series (or building a from scratch masonry one). But it seems like it is useless when it comes to heating. The closest I've come to finding a big open fireplace that also heats, is the wittus optifire. But it seems that leaving the door open with a fire going is not a good idea, and is not using it as designed. Am I wrong?
Is there a compromise, or do I need to choose between heating and having a big open fire to cook in?
Advice much appreciated.