I chopped 2 for this demo.
Add water. I pour enough to cover the top of the chopped onions.
Boil until the skin becomes clear.
Place both the chopped onions and boiled water into the mixer.
Keep it chilled in fridge. Drink a glass in the morning and at night. Here is a link I found on health benefits. http://www.diethealthclub.com/juice/onion-juice.html
Orange County, CA