Combine all of the dry ingredients and mix well with a fork until no lumps remain.
Add a tablespoon or two of the rice or the almond milk and stir it thoroughly to a paste. Add the remainder of the rice milk and stir it until well smooth.
Warm over very low heat for about 20 minutes (the longer you heat it, the smoother it will get), stirring it periodically.
Finally top up with boiling water to make 1 cup and stir well.