Furnace or Burner for cooking

Hello, This is Debabrata from Bangladesh. Recently, I visited an area where much people are using very primitive furnace where costly wood is burning to cook food. These people are poor though they have electricity in their home but gas is yet to supply. I am thinking to make a solution for their cooking which is Safe, Cheaper & user friendly. Please Suggest me for possible solutions. Email: microwavebd@gmail.com

I responded to your e-mail address Good luck Big AL