Thanks for the birthday present Kim (pink mould in photos below), it finally got me round to using the fat that has been sitting waiting for months! Will be interesting to see if I have managed to fill them properly and if I manage to get the soap out ok...
This is pretty much the same as the last batch except bigger and with sandlewood instead of lavendar. I also strained the fat through a tea towel as the last lot have got orangy lumps in which I think is where there is a little lump of fat from the rendering process (maybe it is the tissue that holds the fat in place that you melt the fat out of rather than fat itself)
300g lye
855g water
50ml sandlewood oil
Be very careful with the lye as it is highly caustic. Wear gloves and goggles and long sleeves.
Add lye to water (not the other way round) and stir. Wait for temp to drop below 50 C (but above 35C). I found it heats a bit above 50 when you add the lye to the water.
Add to melted fat (around same temperature) and blend with stick blender until you get trace (ie dribbles of the mixture will sit on top when placed there)
Add scent and stir in.
Put in to moulds - but tricky to get filled right, I used a ladle and then a spatular to smooth the tops
Now we just have to wait and see how it comes out - hopefully well as this must be several years worth of soap!
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