UDS Drum... What's acceptable prior contents?

There are brethren who have made UDSs from drums containing VOCs (Volatile Organic Compounds) - Gasoline, Fuel, Solvents, etc. Their consumers have not croaked or gotten ill.

There are brethren who have built UDSs from drums that contained cooking oil or fruit juice. Their consumers have not gotten ill.

Using a drum that contained VOCs should be washed thoroughly with soap and/or Simple Green *before* performing a burnout or liner grind. All it takes is a spark in a dirty drum to ruin your day/life.

Clean, clean, clean is the word for those VOC drums.

I have no idea what was in my old drum before I got it. I just made sure to clean the hell out of it, including removing every last bit of that nasty red liner. I've cooked a ton of Q in it and I'm still alive as well as those who've eaten my offerings.

EDIT- I HIGHLY recommend finding yourself an unlined open head barrel with a lid. Getting that liner out is a real BEEOTCH even with a burnout!

Anything but nucular waste Food grade= the dreaded liner I went through that deal once.... never again!

There are some food grade un-lined barrels out there. I got a couple last fall at a recycling plant. They held "Bio-degradable Kosher Coconut Oil" for whatever reason. They were sealed tops and a Weber lid fit perfect.

I am using a mineral oil barrel. Without cutting off the top yet and just looking through the top hole as far as I can tell it is unlined, either that or it has a silverish/gray liner. I still plan on taking a torch to it regardless.