Interestingly, scholars have also suggested botanical linkages between the two the cultures: the Soma plant, celebrated both in the Rig Veda and the Avesta where it is called haoma, later ...

They also drank intoxicating liquor, known as Sura, a brandy made from corn and barley and the juice of soma plant ... widow remarriage are also seen in Rig Veda. A Group of families or Kula ...

The origins of Soma were very enlightening ... whole which must be older than Sanskrit as the earliest hymns in the Rig Veda have borrowings from Dravidian. For a short guide Try Kamil Zvelebil ...