Trail Boss powder ?

by Cherokee , Medina, Ohio, Wednesday, January 20, 2016, 14:52 (3233 days ago)

I went to open my jar of Trail Boss for the first time in a year and found the lid very rusty and lots of rust residue on the top of the jar below the lid. The powder smells OK but I wonder if anyone else has experienced this. Lots of other metal cans on the shelf for many years with it have no rust...unusual. Is there something unusual about this powder that promotes rust?