If you have a fireplace, you can use a Rocket Stove in the fireplace and heat/cook food with just wood twigs, small pieces of limbs if there is any tree around you. Pick up small limbs that have fallen from trees. If you have a balcony, use the Rocket Stove. It burns wood to ashes and burns so hot and completely, there is little smoke.
No fireplace. Gas stove , lighting pilot with match. Working good enough.
Or get yourself one of these:
http://biolitestove.com/campstove/camp-overview/features/
Once you have some heat being produced in the stove, the heat produces electricity via a thermoelectric generator. This, in turn, powers a fan that makes the burning very, very clean. It also produces enough excess electricity to power a USB charging port - so you can recharge cell phones and an e-reader. Oh, and it is a STOVE, so you can also boil water or cook some food on top of it, as well.