Drop by drop sticky sweet sap falls into the metal bucket hanging on the spout inserted into the maple tree. On a good day a bucket fills in 10 to 12 hours. It takes 30 to 50 gallons of sap to make just one gallon of maple sirup, something the Funk family has been doing since the 1820s. They began selling it commercially in 1891, 35 years before Route 66 was commissioned. Located near the midpoint of Illinois’ portion of Route 66, you can visit the Funks Grove farm and pick up some sirup for yourself if your timing is right.