Build a Rocket Stove Step-by-Step. Building a rocket stove is quick and easy. You will need one #10 can and four small cans (soup, corn, beans, etc.). Seeing how to build a rocket stove is much easier then explaining the process in writing. I recommend watching the video and commenting if you have any questions. This is a great alternative heat source and cooking option for camping, emergency preparedness and to cook your food storage on. If you can cook it on a stove you can cook it on a rocket stove.