You can cook on a stick alright, but there is not really room for iron pots.
Have you ever tried building a fire mid-day in winter? I really like to cook with a fire in cold weather, as long as the wind is below say 20-25 mph. A wind break is helpful. I have planted some trees at my campsite and use poles with canvas over them sw of the fire to block the prevailing winds.
edit- The easiest way to cook outside is to just cook on the ground. You don't need a fire pit, just a place cleared of vegetation. Build a larger warming fire, and pull the coals out of it with a shovel to heat your pots. My aunt is from Alaska, and has contributed many recipes to Alaska magazine. She could not believe that we could cook food for over 30 people with one good sized fire and the coals that came off it.