This one was caustic soda based. I wanted to get an idea of how it should work before going onto using woodash lye. I really like Olive Oil soaps, so I based this one around that and kept it simple with only one oil. I was also curious as to what would happen with the colour. The ingredients: Caustic Soda, water, pine tar and olive oil... I gently warmed the olive oil (thinking that it would help the pine tar to blend with it), removed it from the heat and slowly added the pine tar. Then added the lye water (caustic soda + water which had been mixed previously and allowed to cool)... I stirred it manually, expecting it to go from a light trace and then sieze, but it actually took about ten minutes of stirring to get a light trace. It also looked a little like it had curdled, but I supposed that this is just the pine tar in a suspension (maybe???) I wanted to get a photo of the trace, so I stirred for a bit longer and then it got very thick, very quickly... By the time I had poured the last bar it had become very thick, and didn't settle when I tried to smooth the surface. Cleaning up was surprisingly easy. Looking at it now, I reckon that I'll be able to remove it from the moulds tomorrow. Now the hard part of waiting several weeks before giving it a try.