Lactoferroxide coating.
 
 Take 4 ounces of frozen milk from the fridge, pour it in a stainless steel vessel and put it on simmer at 220 deg C for 5 hrs. By the process called sublimation the frozen milk evaporates and the Lactogen from milk will combine with ferrous material and amalgamates with chromium coating in stainless steel to form a golden yellowish black color called as lactoferrooxide.
 
Yesterday, I tried this at home when I went to have a party with my friends at #IITM at 05:30 p.m. and removed the baked vessel upon returning at 11:50 p.m.
 
 
(PS: You know all inventions are by accident)
(3rd Mar 2018)