About 30 milled rice grains are placed in a test tube and 20 ml of distilled water are added. The test tube is put in boiling water bath for 10-15 minutes (brown rice requires about 20 minutes). When cooked, the test tube is removed from the water bath and cooled at room temperature. Then, the rice in the test tube is smelled and rated following the 5th edition of the Standard Evaluation System for Rice (SES, IRRI) (2013).