Just bought up big at an indian spice shop and grabbed a few things that were new to me.
One was casa casa seed.

Google brought up stuff about Cuban cigars and the closest I got was cassia seed but looking at images and it's different.

Does anyone know what it is?

I think its Tamil for poppy seed

brb with link

info here

THANK YOU SO MUCH!
It's different to normal poppy seeds, it's smaller and elongated rather than round, but from that site, I'd guess it must be a relative.
I found a recipe using them that looks yummy

a pleasure Im a bit of a googlenut

Might they be nigella seeds?

http://www.uni-graz.at/~katzer/engl/Nige_sat.html

Kasa Kasa is actually Basil seeds; which is mostly used for Falooda

Basil seeds
When soaked in water the seeds of several basil varieties become gelatinous, and are used in Asian drinks and desserts such as falooda or Sherbet. Such seeds are known variously as sabza, subza, takmaria, tukmaria, tukhamaria, falooda, selasih (Malay/Indonesian) or hột é (Vietnamese). They are used for their medicinal properties in Ayurveda, the traditional medicinal system of India and Siddha medicine, a traditional Tamil system of medicine. They are also used as popular drinks in Southeast Asia.