So, one of the soap blogs I read (The Sage) recently had a reader challenge to create a milk soap and write a blog post about it. I don’t have the picture yet (I’ll probably wait til Wednesday to unwrap & slice it) but I can write up the rest of my entry now.
Precursor: These are not instructions. If you’ve never made cold process soap before, go read a proper “how to” guide, or get someone to teach you. This is written for people who already know how to make soap and don’t need every step laid out. There’s lye involved, don’t play with that without knowing what you’re doing. Also, never use a found recipe without running it through a lye calculator on your own first. (I made this one up for myself.)
First, here’s the recipe I used — it’s a little varied from my usual mix, because I wanted to use the last of my cocoa butter & shea butter, hence the odd numbers:
400g Coconut Oil
400g Palm Oil
200g Water
200g Coconut Milk
200g Olive Oil
172g Sodium Hydroxide
100g Grapeseed Oil
56g Cocoa Butter
22g Shea Butter
28ml Lemongrass Essential Oil
I did the usual measuring out of the lye & water. I can’t be sure, but I think the lower volume of water made it heat up more. At least, I can only assume that’s the reason that the glass jug I’ve been using for 8 months to hold my lye/water solution broke off cleanly at the bottom when I submerged it into the water bath. Crap. Well, at least it broke in the sink and not all over my counter. At worst, my sink will drain a little more clearly. Lye all over my kitchen is NOT something I want to think about.
So, I switched to a pyrex measuring cup instead. This worked fine. Phew. Left that sitting in the water bath while I went on to measure & mix the rest of my oils.
The shea butter & cocoa butter were already measured out, because I needed to see how much I had left so I could run that through my lye calculator first. I added the rest of my oils, and measured out the coconut milk and set it aside. Heated the oils, cooled the lye until everything was about 120F (Yes, I measure my oils in g, and my temperature in F — “120″ is a bit more exact than “50″ so being a degree or two off is less of a big deal.)
Got my stick blender out, and started stirring the lye solution into my oils. Blended in very short bursts — I’ve discovered before that a low-water soap can go from “untraced” to “seized in the pot” SUPER fast, and I’ll be damned if I’m going to end up with a solid lump again. Huge pain in the butt. When I guessed it was roughly halfway to tracing, I added in the room temperature coconut milk, stirred a bit more to get everything fully blended, added in my essential oil (lemongrass — yummy!) and grabbed my prepared mold.
It was starting to trace super fast at that point, so I started lumping it into the mold as fast as I could. I usually make round soaps, using a lined PVC pipe, so the more firmly traced it is, the harder it is to get it into the mold. By the time I was finished molding it up, it was roughly the consistency of playdoh, which is ridiculously hard to work with, especially with a narrow mold. Upon reflection, I probably should have grabbed one of my flat pan molds, but I really like my round soaps. Here’s hoping there aren’t any major air holes in there — I pushed at it a lot with my spatula to try to shove it down. Next time, I think I’ll add the essential oil at the same time as the milk so I can avoid extra stirring.
I had a bit more than fit into my single round mold, so I grabbed one of the washed, clean milk cartons I save for exactly this purpose. They’re neat, they make perfectly square soaps.
So, everything is in the molds, and I’m leaving them uninsulated because… well, it’s a milk soap, and I’m told those heat up a ton. They’re sitting out in my pantry right now, and I’m looking forward to unmolding them on Wednesday.
…stay tuned for how they turn out! I didn’t add any color because I wanted to see what the coconut milk did. My soaps tend to be a fairly standard light cream color when left uncolored, so we’ll see how they turn out with the milk.
Updated! Now, with pictures!
I unmolded my coconut milk soaps, and hooray, they seem to have turned out! Will wait a few weeks to really try them, but washing the residue off my hands sudded up quite nicely and left my hands nice and soft, so I think it’s going to be pretty good stuff.
As expected, there are a few "gaps" where there were air pockets. Next time, I have to work on getting it into the molds faster, it’s difficult to work with a long narrow mold when you’re at a super thick trace.
Color: Not much different from my normal soaps, maybe a tinge more yellow… although that’s probably from the lemongrass, which has some minor discoloring effects. Next batch I do (I still have another 200g of coconut milk) I will probably try to color a bit. We’ll see.
I scented these a lot stronger than I usually do, and my kitchen smells very strongly of lemongrass. I am totally okay with this, because lemongrass is awesome.
