As a guide, use a ratio of 1 ½ cups of water to 1 cup of rice. This water to rice ratio makes perfect basmati rice that is light and fluffy. However, if you find that the rice is too dry or too wet because you are using a new bag of rice or switched brands try increasing or decreasing the amount of water the next time you make the rice. Take a note of this for the next time you cook the rice.