I rinse it off immediately after use.....and drain the water out of it, of course. That's it. Immersing it in the boiling wort 20 minutes before flameout keeps it nice & shiny.
“Malt does more than Milton can / To justify God’s ways to man”
-A. E. Housman (1859–1936). A Shropshire Lad , 1896.