Puffed Rice in English or Kallepuri in Kannada, usually mixed with salt and masala are sold road side, are the  best evening time snacks in Bangalore. Kallepuri vendors are commonly found at Lalbagh where walkers buy the kallepuri wrapped in a sheet on old paper, after a tiring walk around the park.
They cost less than Rs 10/-

Shot at Chitra Santhe 2011.