Welcome to the spiciest episode of Southern Slurp thus far! 
Do you know how old the recipe for Avakaya, the mango pickle of the Telugus is? 
No one does. BUT, what we do know, is that the Arabs from before the advent of Islam, traded spices and pickles with the Andhras. The Dutch and the Portugese, in the fifteenth century, in fact, encouraged the Telugu people to prepare the Avakaya for export to western countries. 
Take a listen, and drool!