To get fluffy grains of rice that don’t stick together, you should always wash rice in a sieve under a running tap to rinse away the starch. Once cooked, if you are not serving it right away, the rice should be cooled down as quickly as possible by spreading it out on a baking sheet and placing it in the fridge. When stir-frying rice, it is essential to use cooked rice that has spent at least a few hours in the fridge, as this helps to dry it. Otherwise, you will end up with a mushy mess.