Add all of the ingredients, except the rice flour, to a small pot and whisk together well. Now whisk in the brown rice flour until there are no lumps. Add the cayenne.Turn the heat to medium and once the entire surface is bubbling, let it cook for 5 minutes (set your timer so you don't overcook it), whisking around the edges a couple of times during. Once the 5 minutes are up, remove from the heat and leave to cool for 5 minutes. It should have a syrup consistency as it cools. Use over your favorite dish. I served it over some fluffy brown rice and peas and carrots, then topped with extra chives and sesame seeds. This would also be great over cauliflower wings as a great dipping sauce.