1: Make a fireplace using sticks + rag and one firewood and cook some raw fish fillet.
2: Start cooking and back off, go 300-500meters away from the fireplace and then come back.(works also if you disconnect and re-connect again)
On come back the fireplace is still burning but the raw fish fillet and the firewood is gone. You need to put another meat to update the fireplace window and make the previously raw fish fillet and the firewood to reappear.