The "grits grinder" is actually a cane grinder used to press sugar cane to extract the juices that are then boiled and concentrated into cane syrup. The water fountain in Repton uses a syrup making boiler as its water receptacle. When you boiled the juices, to evaporate the water in it, some of it would thicken and make a "candy" around the flared rim. Great stuff for a kid. I could not tell if you were making a joke or did not know based on your caption. Please don't take offense.