My plan was to use an old fridge outside of my greenhouse, back to back with my woodburning stove.
Plan is to give the stove a good clean out as I usually burn anything I can get my hands on. Half fill it with hardwood sawdust which I hope to aquire from a local cabinet makers FOC if possible. Light the top with a bit of BBQ lighting fluid and let it smolder downward.
Then all I need to do is hook a flexible pipe over my flue pipe and feed it into a hole I'll cut in the bottom back of the fridge. I intend putting an outlet hole in the top of the fridge with a cowel to keep the rain out.
Open the fridge door, put the stuff to be smoked on the shelves and bobs your uncle!

THEORETICALLY!