Not me, either. How old is your bar?Has anyone noticed slime from high-lard soaps? My 80% lard, 20% CO soap is lovely and has nice bubbly lather that feels very creamy, too, but sometimes the creaminess edges into slimy territory. I mean, it doesn't not make sense, since lard is high in monounsaturated fats like olive oil is, but has anyone else noticed this? Or could this just be the scummy feel that some get from lard?
JayJay, do you have hard water? I'm wondering if that adds to the issue of greasy residue or not. We have extremely hard well water (TDS of over 5k), so it always makes me wonder just what effect that has on the soaps other than increased soap scumI agree with what DeeAnna said. Also, I believe that my lard soaps with 5% superfat leave a gross greasy residue in my tub. I think that it is more than just scum. It's like scum sealed under a layer of oil. It actually takes a fair amount of elbow grease to scrub it off of my tub floor. I am thinking about reducing my superfat to 3% to see if it helps the problem. I'm not sure if anyone else has had this issue.
Ah... now see, the only lard soap I ever used was made by my grandmother back in the 60's. She still used the wood ash method and her lard soaps would eat the paint off a car (well, not quite that bad.. but you get the idea). So I've never had the pleasure to try a GOOD bar of lard soap. I'll try my recipe at a 2% superfat for the first batch and see how that does with our well water.Use whatever superfat makes you happy. Those of us who superfat at the lower end of the typical range happen to like the results we get, but we're not by any means saying our choice of superfat is the only right solution for every soap and every soaper.
There is one basic safety reason for using a slight superfat and that is to ensure the soap is not lye heavy. But some of us have learned that lye heaviness is not the "kiss of death" for a soap, if it's otherwise properly made. Moderate lye heaviness (as much as -5%) will completely dissipate in a properly-made soap during a typical 4-8 week cure time.
A lot of soaps contain a higher superfat than needed just for safety. The extra fat is thought to increase the "conditioning" property of the soap so the skin is less likely to become irritated or dried out by the soap. I'm not convinced a higher superfat is the only way to ensure a soap is mild and non-irritating. If I carefully choose fats that make mild soap to begin with, then I don't need a higher superfat to ensure mildness -- the soap is already gentle enough.
I also think there are downsides to a superfat that is higher than necessary -- a higher superfat can cut lather, can increase the chance of DOS (rancidity), and can make soap softer. These are all good reasons to not use a higher superfat than is needed for a particular soap.
If I were to make a 100% coconut oil soap for bathing, would I use a high superfat? You betcha!
Do I use a high superfat in a soap with a high % of lard? Nope. It's mild enough already.
I ordered both yesterday!I would also consider adding a chelator to your recipe to reduce the amount of soap scum that forms in your hard water. Many people use sodium citrate and some of us use tetrasodium EDTA. Both work well.
I've provided info about how to use citrate and EDTA in other threads on SMF, but I'm also collecting this information on my own website so it's all in one place and easier to find -- click the link at the bottom of this post.
Does is smell?After reading several pages of this thread I made a batch of lard soap. 75% lard, 20% coconut oil and 5% castor. 5% superfat. It is finally cured and I am using my first bar. I really like this soap. The lather feels so rich and creamy. The only thing I will do differently next time is add sugar. I add sugar to every batch but somehow forgot to add it to this batch. I miss those big bubbles.