Some very good video on how to make and use this easy cooking fire.
NOTE: you should have a saw or something to square the top ends of the logs. While not strictly necessary, it makes for a more stable cooking surface. You could make this with a good hatchet.
NOTE TWO: You can make this with green wood, in fact that is recommended to make the assembly last longer. The fire is feed from smaller dry wood fed between the green wood.
http://www.edthatmatters.com/gear-vs-diy-gear-swedish-torch-solutions-for-pennies/I would like to see this practiced at one of our campouts.