Whistlez biscuits by Rupali Foods serve the purpose of filling you up a light snack as well as being the perfect compliment for our tea. They come in all sorts of varieties like cake rusks, zeera kalonji, butter cookie and sooji cookies etc. Costing not more than Rs 20 per packet, you would never look at Oreos again. These delicious biscuits are available at all stores and marts and come in pocket sizes too.