Here's how to cook (non-instant) rice in the backcountry: Use 1 cup of rice for every 2 cups of water. Consider adding in a packet of bouillon for extra flavor. Put together in a pot and place on the stove at a moderate heat. Add salt and a small amount of butter or oil to help the rice taste better and clump less.
How do you cook rice for backpacking? - Trail and Summit
The newly created warm gas then passes through a compressor increasing the temperature of the gas. The hot gas is then passed through a heat exchange condenser alongside the water, heating it up. The water is then heated 3-5 degrees and pumped back into the pool, the remaining gas turns back into water and repeats the process.