Right this smokiness I have come across before and its bugging me

Now yesterday I was walking through my local town to replace two bunches of parsley that I thought was coriander yes school boy error and I could smell the smokiness
I looked across the road and a West Indian barbecue stall was set up and a big oil drum on its side used to cook the food
Now this oil drum was closed so it looked like a whole drum apart from a pipe ( chimney ) coming out of it
to release the smoke
Then the second part of this story I got home and was looking at a few recipes in the India cook book
and one recipe said to impose a smoky flavour light a bit of charcoal put it in your dish on a onion skin and let it smoke with the lid on
I'm not saying they do this in the kitchen but I would say its worth a go