This thread is quite idiotic based on the ideas presented so far.
For instance there are at least 14 books in just 11th century that talk about different foods available in the north part of the country, not to mention other regions. This will make it all prior to coming of the Muslims or the Euro guys in India.
Prior to the creation of religion that we know as Islam, there are books from 3 rd century till 7th century which do have descriptions of foods available and off course eating habits of people. One has to just read and not be lazy trying to formulate things on internet or look for information on internet.
If any of you are serious and have an open mind with some money in your pocket, then acquire language skills and an abillity to read other scripts. Else you will create similar threads which are baseless.