Pre-burning foil?

[gerald]

Has anyone ever heard of pre-burning aluminum foil on the stove before smoking tar off it? If so, could someone please explain why this is done?

Thanks,

gerald

 

[Nib]

You burn the foil first to burn up some of the chemicals on the foil, you don't wanna be smoking them.

 

[Morrison's Lament]

Yeah, you'll see a white myst of scary looking chemicals coming up when you first heat the stuff

--- G.