Cooks all over the world would be bewildered without the onion; and Bobby Stewart has made sure there will be no bewilderment for his family, friends and neighbors. Since the beginning of civilization, onions have been an important part of our diets. Because of the onion’s tissue makeup, there is no conclusive opinion about the exact location and time of its birth. Many researchers believe onions originated in central Asia; others suggest they were first grown in Iran and western Pakistan.

While the place and time of the onion’s birth is still a mystery, there are many early documents that describe its importance as a food and its use in art, medicine and mummification. Translations of Babylonian cuneiform tablets at Yale University Library reveal recipes using onions, leeks and garlic.

Known facts are that onions were growing in Chinese gardens some 5,000 years ago and in Egypt, onions were actually an object of worship. They symbolized eternity. A basket of onions w...