Does (or could) a company manufacture food-grade plastic bags big/tough enough for 30, 40 or 55 gal. galvanized drums? I don't see why such a bag couldn't be rolled up and inserted through the top bung with enough left sticking out to be twisted, folded, zip-tied and stuffed inside once the barrel is full. Screw the cap on and the syrup would be ready for transport to the buyers and packers. When the bag is empty, just pull it out and properly dispose of it. Wouldn't even have to wash out the barrel. At maybe a buck apiece, it sure beats the heck out of a $200+ outlay for stainless steel. Just a thought.