Preheat the oven to 160C (I used a fan forced so you can load 2 trays in).

Add all the ingredients to a bowl and give it a good stir. Let it stand for about 15 - 20 minutes and until its starts gelling together. It will be fairly liquid in texture but everything sticks together in a weird way.

Line two large baking trays with silicone sheets or non-stick baking paper and then divide the mixture between the two. Spread it out as evenly as possible ensuring that there are no holes anywhere. You really just want to get this as thin as it can go within reason.

Bake for 70 - 80 minutes giving the trays a turn or two if your oven has hotspots.