I actually bought two soap molds at Bargain Bill's, our local discount store, which had just enough room for the first batch . . .
. . . but not the second! So we scrambled around and found an old muffin pan (I think these are rather cute, actually!) I don't use non-stick pans for cooking anymore, so I don't mind using them for soap, since there will be no danger of cross-contamination.
These recipes made either 4 of the larger bars, or about 9 of the smaller "muffin" soaps.
A few weeks later, the kids and I went to my sister-in-law's house for a visit, where the two of us decided to try making goat milk soap (she raises dairy goats). Another success! (Sorry, I didn't keep a copy of the recipe - maybe if she still has it, she can add it in the comments - please?)
This week, I noticed our supply was starting to dwindle. Since it takes a month for soap to set up properly, I figured I'd better get started on another batch. I had some lovely grass-fed tallow from the half cow we'd bought in December, rendered and ready to use (and so yellow! You can tell it's 100% grass-fed just by looking at it!), and also some lard a friend had given me (from the pigs she'd raised that summer - she didn't want it, so she gave it to me for FREE!)
I searched high and low for a simple, no added colors or fragrance small batch tallow or lard soap recipe, but couldn't find anything that suited my needs. I did, however, find what I needed to formulate my own recipe online. First, I found the saponification numbers for the two fats I was going to use (saponification is the process of turning fat and lye into soap - resulting in a substance that is no longer either of the two. So (if your ratios are correct) there will be no lye left in your soap, and it will be perfectly safe to use. Gotta love chemistry!), then I multiplied the amount of fat I wanted to use (16 oz) times the SAP #s to find the amount of lye needed. I added a little extra fat (called "superfatting" in soapmaking circles) to make sure there was more than enough fat to bond with all of the lye, just to be on the safe side.
It worked perfectly! Here are my recipes:
Small Batch Simple Tallow Soap Recipe
16 oz tallow (melted)
6 oz water
2.144 oz lye
(it's important to have a digital scale to get the weights accurate - you don't want any lye remaining in your soap!)
Small Batch Simple Lard Soap Recipe
16 oz lard (melted)
6 oz water
2.09 oz lye
Mixed Tallow/Lard Recipe
8 oz tallow (melted)
8 oz lard (melted)
6 oz water
2.112 oz lye
Just out of curiosity, I also calculated how much each kind of soap would cost. Here's what I found:
Castille Soap (I bought my olive oil at Walmart for $18/101 oz)
Per batch: $3.35
Large bar: $.83
Coconut Oil Soap (Wilderness Family Naturals Coconut Oil $12/32 oz)
Per batch: $6.50
Large Bar: $1.62
Tallow Soap (half cow $2/lb from my local organic farmer)
Per batch: $2.50
Large Bar: $.64
(I didn't calculate prices for the lard soap, since the lard was free.)
In case you're wondering, I bought my lye here. I believe it came out to about 25 cents an ounce, or about 50 cents a batch.