Put a few cups of brown rice into a food processor and process on high until it has been ground up into a fine powder. Depending on how sharp your blades are and the power of your food processor, this step could take anywhere from 5 - 20 minutes.
Once the brown rice has become a powder, put it through a sieve to ensure any large pieces of rice that may be remaining are removed.
Store rice powder in an airtight container in the fridge.
To make brown rice cereal, bring 3/4 - 1 cup (depending on how thick you want it) of water to the boil in a saucepan.
When boiling, whisk in 1/4 cup of rice powder. Reduce to a simmer.
Simmer for a further 10 minutes, whisking constantly to keep it from sticking to the bottom.
Remove from heat and mix through any fruits or yoghurts you wish to add (this easy home made apple sauce
Let cool for a few moments and serve.