I made a laundry soap a few days ago, from hard vegetable fat (similar to American Crisco I imagine) and olive oil. My soap-making book says just to cut up the fats and pour the hot lye over them, and stir until melted. This didn't seem to work as there was still lumps of fat in there when the mixture started to trace. I then used the stick blender but it was so thick by this stage it was hard to blend well. I tried putting it in the slow cooker in the hope it would melt the fat, but I am not sure if it worked or not. I've cut it into bars and there seems to be a bit of marbling going on, just a little, but I don't want free oils in a laundry soap for obvious reasons! Can I fix it in any way? Was thinking of grating it and putting in back in the slow cooker...would that melt the fat in it, or since it has already been cooked will no further saponification take place? Could I add a small amount of lye and water in the slow cooker or would that be silly? The recipe was: 400g hard vegetable fat (no further oil info was given on the packet) 200g pomace oil (half of which is veg oil, I didn't realise until I got home but I tried to account for it in the soap calculator) 80g lye 210g water Any help would be appreciated, I'll get a photo if it's useful. It only cost about £2 so I'll throw it out if I have to, but I'd rather not!