Since brown rice is more layered than white rice, it requires more water and a longer cooking time. First things first, it should be thoroughly washed multiple times under running water. Make sure there is no dirt or debris in the rice. To cook it properly, add one part rice and two to three parts of water. So, for one cup of rice, add about 2 ½ to 3 cups of water. Wait for it to boil, then turn down the heat and cover it. Let it simmer for about 45 minutes. And voila! Your rice is done. If you soak the brown rice beforehand, the cooking time will be reduced.