If using uncooked rice, cook as you would regular rice.
In a large Stand mixer-bowl add corn meal, buckwheat flakes, sesame seeds, ground flax seeds, sunflower seeds, and pour the boiling water over. Let soak for 10 minutes.
Add the last boiling water to the seed and flake mixture, Sprinkle the dry yeast on top and leave it for another 10 minutes till it has dissolved and is think and foamy on top.
Add cooked rice, oil, sugar, salt and gravy color or cocoa, and start the machine, using the dough hook. Gradually add yogurt or buttermilk and the gluten free flour. The dough will look and feel like thick oatmeal.
It is important to keep the machine on low for at least 5 minutes, keep scraping the sides and the dough hook.
Pour into a greased 1.75L loaf form, and using a wet fork prick the surface.
Place in the oven on the bottom rack.
Bake at 180 C / 375 F for 1 hour.
When baked remove from loaf pan, and wrap in a damp dishtowel and let cool on a rack, turning a few times. Store in the refrigerator for up till 1 week.
Freezing instructions: Wrap in double plastic and place fresh in the freezer. Defrost in the refrigerator.