Combine the water with the ground flax seeds, active gluten free sourdough starter, honey, olive oil, apple cider vinegar in a mixing bowl and set aside.
Combine the dry ingredients in the bowl of a stand mixer. Use the paddle attachment to mix them for 1 to 2 minutes making sure they are well incorporated. This step is very important.
Pour the wet ingredients into the bowl of the stand mixture with the dry ingredients.
Beat the dough on the lowest speed for 5 minutes, scrapping down the sides of the bowl as necessary. When you lift the paddle attachment, the dough should slowly fall off of the paddle. If it stays on the paddle, add 30 g of water at a time until you achieve the right consistency. The dough should be thick but not stiff.