I had someone ask if I used the cast iron and another ask if I cooked on the woodstove.
Yes! You can raise and lower the temperature by using trivets or even by turning another cast iron pot over and cooking on that. These are the trivets I have for this purpose.
I keep the old irons on the woodstove to hold the heat longer. One of the children put the old railroad spike on top too. When I'm not cooking, I have a cast iron kettle that goes on top.