White onions are super-healthy with vitamin-c, flavonoids, and phytonutrients. Among other Allium vegetables, onions are healthier. Intake of white onion is good in taste but also loaded with innumerable health benefits. Onion powder is used as a type of seasoning and is the concentrated flavoured powder obtained from dehydrated onions. The dehydrated form is made of finely ground, dehydrated onions, usually from the bulb onions, and has a strong pungent odour. As it is completely dehydrated, it has a longer shelf life.