-to improve the digestibility of your rice, soak it first! About 8-10 hours before you want to cook your rice, pour the dry grains into a large bowl. Cover with lukewarm water and add a splash of apple cider vinegar (about 1 Tbsp per cup of rice). Top with a lid and allow to soak until it is time to prepare it. Simply dump the rice into a fine mesh sieve and follow the instructions above!