I used a slow cooker to make this. I used 1 litre of soya milk and it took 13 hrs to reduce it down to just under half litre. It didn't thicken very much though and is about twice the viscosity that it was when I started. Any ideas why this might be ? I can only think that it was not getting enough heat. I had the heat setting on high. Thanks for the recipe, I am looking forward to making vegan bounty.