Given the chance, a quick wipe over with some kitchen towel.
Importanly, this reminds me of what happened after a ride in a
heavy downpour, and the short / long term implications.
Got caught once in some thunderous heavy heavy rain on my winter steely. Rode through it, got home (couldnt even get my clothes off i was so wet
) and put my bike in the shed.
Got it out some days later and noticed a rusty water stain emanating from one of the chainstays
Tipped the bike upside down and
.....the cruddy, rusty cr@p that came out of the seat tube had to be seen to be believed. It had been sitting there...and would have been rotting the inside of the frame if i'd not noticed.
Extra care required after a ride in heavy rain...beware.