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This shop on Rue Cail, near Gare du Nord, sells all sorts of spices and food items from the Indian subcontinent.
I think the proprieter is Sri Lankan, although every shop selling anything from the Indian subcontiment is called Indian (and not Sri Lankan or Pakistani or Bangladeshi) and all the restaurants are named after monuments, places and emperors of India.
However, like all things from the subcontinent, you must be alert regarding the quality of food. We had a salesperson of this shop selling us expired food item, when someone noticed the date.
Also, my serious advice, anything that you can find in a French supermarket will be fresher (if applicable) and cheaper in the French shop. Upto 2-5 euros! But the Indian stuff that you cannot find anywhere else, you can find here.
Recently they have started selling pressure cookers also. And many other steel utensils.


