Dear Pari, 

 If you want to be a chef and you have completed your graduation, then you can pursue Masters in Hotel Management or Masters in Hotel and catering management. You should have secured a good score and appear in entrance tests  for PG programme held by the various state, central and private universities.

Wish you good luck !

No need to get an MBA degree for becoming chef. 

Rather go for Hotel Management courseije bBA from IHM and its affiliated campuses in India which are topnotch recommended as majority of high quality chefs have passes out from these colleges.

Post 12th You can go for BBa in Hotel Management which is much recommended course. And take suitable training and internship for hands on experience  

Eligibility for BHM in Culinary. A 10+2 qualification with any set of subjects with a minimum of 50% marks in aggregate is the minimum criterion of eligibility required to be fulfilled for an aspiring candidate to pursue the course.
Formal Training Programs. Aspiring chefs may pursue formal training through culinary programs offered by community colleges, universities and culinary institutes. Some chefs complete certificate programs that typically last a few months, while others earn 2-year associate's or 4-year bachelor's degrees.
Degree Required. If you're interested in becoming a college-level culinary arts instructor,you will need to have an associate's degree in culinary arts, at minimum, even if you have years of experience as a chef.

Thanks,
Azim Shaikh