I’ve published a book called “South Bhog (Flavours of South Indian Cooking”. You can purchase them in below online stores.
http://spicesonline.info/indian-spices/dakshin-bhog-by-santhi-balaraman-p-1034.html
https://www.amazon.com/Dakshin-Bhog-Flavours-Indian-Cooking/dp/8129107147
My facebook is: https://www.facebook.com/shanthibalaram/