Number 21: Soup, anyone?
The Joseph A. Campbell Preserve Co. of Camden, N.J., had been canning fruits, vegetables, and soups long before John T. Dorrance came along in 1897. But Dorrance, armed with a bachelors from MIT and a doctorate from University of Gottingen in Germany, found that using less water in the soup gave it a more concentrated flavor. The customer would then simply open the can, pour the contents into a saucepan, add water, and heat it up. The idea was so successful that the business changed its name to Campbell Soup Co.