Onion is essential food in day life, without onion we are not imagining of any cuisines. There are different types of onion products available in market which is very form its color, size and taste. India is 2nd largest producer in world with its unique pungency. It is vegetable which is produced in largest quantity and consumed in high quantity in India as well as world. Also onion is useful in raw form with food. Use of onion by every class of people from rich to poor. It is very essential vegetable for everybody because it has more medicinal value also.