Whisk all of the dry ingredients together (except for the raisins) in a large, non-reactive (glass or plastic) bowl.
Once everything is combined, add in the raisins and mix to incorporate.
Add the wet ingredients and whisk until a smooth batter forms. Be sure that you have whisked in all the flour on the sides and edges of the bowl and that no lumps of dry ingredients remain.
Quite quickly, your dough should begin to thicken up thanks to the psyllium husk. You can play around a little with the hydration, but I find this bread gets a gummy bottom layer quite easily thanks to all the fruit and the maple syrup. So, I generally go for a lower hydration.
At a lower hydration, the dough should look like you might just be able to shape it into loose balls if you have greased hands. It should be more of a sticky dough than a batter. On the higher end hydration, the dough should look just too wet to pick up.
Adjust your hydration (adding more water if needed) to reach the above descriptions. If this is your first time making this recipe (or any gluten free bread) I recommend aiming for a lower hydration. It might not be 700g exactly - go for the description of the dough rather than the number.
Cover the bowl and proof for 1 hour. In winter or a cold kitchen, proof it in a sunny, warm spot. In summer or a humid kitchen, anywhere is fine.
Grease and line your USA Pan Pullman steel loaf pan in size small ( 23cm length X 10cm width X 10cm height or 9 X 4 X 4 inches). Preheat the oven to 220C/428F.
After 1 hour, the dough should feel and look bubbly when you mix it. It might have domed slightly for a higher hydration dough, but it probably won't for a lower hydration dough. The bubbles in the dough itself should be evident, though.