A very good store to buy Asian especially South Asian Grocery in Zürich Barkat Lebensmittel
Birmensdorferstrasse 143, 8003 Zürich, you can reach by Trams 9,14, Bus 33, 67,76 to Schmiede Wiedikon
One can read more about it here
http://justhungry.com/2006/05/food_destinatio_2.html