Coal/Charcoal powered stove. With a blacksmith-style blower.
About 40% of India's energy needs are met by coal. Even the sticky, sweet chai made in tapris in North Western Maharashtra on the banks of River Tapti/Tapi is made using these coal (or charcoal). A friend who is originally from Amethi, UP, was telling me that these blower stoves are common across the central belt of India, along rural crossroads that do not have too many customers. Coal and charcoal is way cheaper than Kerosene or LPG, the popular fuel in urban India.