Karkidakam kanji kit anywhere near Financial District?

My mother is staying with us through Karkidakam and has decided the whole household, kids included, gets marunnu kanji once a week. She brought one packet from home and it will last exactly two Sundays. Is there a Kerala store near Financial District, Gachibowli or Kondapur that stocks the kits, or the loose herbs? The kids already have opinions about the taste, but she's not taking feedback.