Hotel concierges in St. Louis often get the question, "Where is Ted Drewes?" The frozen custard stand on historic Route 66 draws long lines of customers ordering cold treats and especially their signature concretes, so named for their thickness. They like to demonstrate it by holding a tub of the stuff upside down. Not a drop plops out. Chocolate is the most popular flavor, but there are many, many others.
Don't worry about those long lines as they move fast. At peak times Ted Drewes had 37 employees working away They often sell as many as 1,400 items in a night. You can even have it shipped to you on dry ice.