Watch: Time-lapse video shows Chicago river dyed green for St Patrick’s Day celebrations
In honour of the American city’s Irish heritage.
This is how Chicago turns their river green for St. Patrick's Day.
— Joe Pompliano (@JoePompliano) March 12, 2023
They have a "secret recipe" for the dye and use boats to spread it — the bigger boats dump 40lbs of the dye in the river & the smaller boats mix it up.
It stays green for 24 to 48 hours.pic.twitter.com/SeqIqFCtrQ
