Life Magazine May 22, 1950
I picked up this Krispy Kan metal canister at an estate sale for 2 bucks.
another side view
It's called a Krispy Kan because of the patented Blue Magic crystals within it's Dri-nob topper that "keeps crackers, chips, popcorn, pretzels, peanuts, dry cereal and many other foods crisp and tasty."
You see, the exterior graphics are a visual serving suggestion!
The Dri-Nob keeps the interior of the can and its contents free from moisture by absorbing it within the blue magic crystals. When they turn pink just remove the glass knob and place it in a 400 degree oven to remove the moisture and reactivate the blue crystals. A-maze-ing!!! I started thinking that it sounds too good to be true and maybe it's made of asbestos or something. I decided to track down the patent so I would feel safe about storing my Chicken in a Biscuit crackers under it's care. Patent 2548168 "Food Receptacle with desiccate 1949" is a bit vague of what the magic crystals are but hints to them being aluminum oxide or silica gel. Aluminum oxide is toxic if inhaled. So don't go breathing around the can. Silica gel is nontoxic but is sometimes "doped with cobalt chloride which is a deep blue when dry and pink when moist. Cobalt Chloride is a carcinogenic." Well that sounds familiar. So I don't know if I ought to go sailing down no hill with nothing between the canister and my crackers but some cancer causing magic crystals.