India, May 22 -- If you ask caffeine enthusiasts, few things hit the spot like a simple, slow-steeped coffee served on the rocks-especially when it's hot or humid out. Bangalore takes it up a notch, with the city's best cafes serving 12-24 hour cold brew coffee with floral, tropical, or even creamy twists. We're listing out a few spots whose creations have a cult following.

Although often dismissed as a summer trend, cold brew is centuries old. Records point to Dutch traders in the 1600s who used a drip-by-drip method to make their morning cup of joe without fire while at sea. The Japanese, already skilled in cold tea infusions (matcha, lest we forget), picked up the method and refined it into the elegant Kyoto-style slow-drip technique...