History and Facts:
Onions originated in the area extending from Asia Minor to India. For the ancient Egyptians, onions were a staple food which were even given as offerings to the gods. With its layered make-up forming concentric spheres, the onion bulb was considered a symbol of eternity. The Spanish brought onions to the Americas and they are now grown throughout the United States.
Onions have 60 calories per medium onion, and are very low in sodium. They are a good source of potassium, dietary fiber, and are a significant source of vitamin C.
Onions should be kept at 32 degrees fahrenheit, with relative humidity at 65 to 70 percent. Typical shelf life is 30 to 180 days. They need a dry atmosphere; too much humidity induces decay.