Traditional Indian Fermented Foods and steam cooked are the most healthy , because it is less stress to the body. 

Use organic foods free from pesticides and chemicals. 

Idli

http://www.jeyashriskitchen.com/2012/09/how-to-make-soft-idlis-idli-batter.html

http://www.yummytummyaarthi.com/2014/07/murugan-kadai-idli-recipe-soft-idli.html

Ragi Idli

http://www.sailusfood.com/2013/04/03/ragi-idli-healthy-indian-breakfast/

Ragi Dosa

http://www.kannammacooks.com/fermented-ragi-dosa-finger-millet-dosa/

Ragi Koozh

https://saapadu.wordpress.com/2006/08/01/koozhu-fermented-ragi-porridge/

http://www.sciencedirect.com/science?_ob=ArticleListURL&_method=list&_ArticleListID=-1025617812&_sort=r&_st=13&view=c&md5=be0ad02d4e454840a8784ad3f8b7ca6a&searchtype=a

Dhokla

http://foodviva.com/snacks-recipes/dhokla-recipe/

History of Yogurt

sweets

Metagenomics analysis of Adhirasam - A traditional rice based fermented food of Southern India. https://www.ncbi.nlm.nih.gov/pubmed/26691480

Medicines

Experimental studies on the fermentation in asavas and aristas part - 1 draksarista. https://www.ncbi.nlm.nih.gov/pubmed/22556971

https://books.google.com/books?id=ceivDwAAQBAJ&pg=PA138&lpg=PA138&dq=making+arishtam+from+amla&source=bl&ots=RXqrOsscrV&sig=ACfU3U3d-Su9sOcOvBrzodwrTSxfWsfayw&hl=en&sa=X&ved=2ahUKEwjXv-mh9d_kAhVBsp4KHf2eC544FBDoATAHegQICRAB#v=onepage&q=making%20arishtam%20from%20amla&f=false