The different colours were created by adding no, little or lots of milk to each cup of black coffee. It measures an impressive 20 feet high and 13 feet wide and took a team of eight people three hours to complete.
It was created for The Rocks Aroma Festival in Sydney, Australia, and seen by 130,000 people who attended the one-day coffee-lovers event.
Elaine Kelly, from event organizers the Sydney Harbor Foreshore Authority, was delighted with the result. She said: "Each coffee cup was filled with varying amounts of milk to create the different sepia shades of the painting."