Harvest journal: using up 14 pounds of deer tallow and 11 pounds of bird fat
Spring cleaning takes on a new twist in our household: using up what we have squirreled away in our freezers so we have more room when harvest rolls around. We hope to be gardening soon, but this is March, and we have 8” of new fallen snow, with more on its way. Towards our goal, we inventoried our cache and found 25 pounds of various types of rendered fat: deer, duck, and some very old goose. With our riches, Michael made soap and I made candles.
This is end-product soap. That darker soap is the goose-deer mix. It smells lemony, whereas the duck-deer smells more like milk chocolate. Pure deer tallow makes a bar so hard and sharp Michael says you can shave with it.
The process starts with measuring. The weight of the fats are entered into a soap calculator to give the amounts of water and lye needed. We zero the scale for every vessel, which is called “taring.”
Michael carefully adds the lye to the water, which creates an exothermic reaction. If he added the water to the lye, it would work on less water, creating a steam flash, which could create an explosion or would at least shatter the bottle. Bad idea. “Do as you oughta, add acid to watah,” admonishes every chem teacher ever. Same goes for strong bases, such as lye.
The water, which started at room temperature, clocks in at 185° almost instantly. (We do stir it with a wooden spoon handle to dissolve all the lye).
While the fat and lye solution cool to 100°F, Michael lines a cardboard box with plastic. We use construction grade garbage bags.
The lye solution works on the fats in a process called saponification, a fancy word meaning “turning into soap.” The trick is getting a combination that solidifies into a bar pleasant to use. The color change says the process works. The blending continues until the mixture thickens and “traces”, or leaves a visible mark on the surface.
Into the box. Covered with newspapers. Covered with covers. Holding the heat in allows the saponification to occur more quickly and keeps the lye and fat from separating. Wait until tomorrow. Cut with long thin knife. Don’t wait too long or the soap becomes too hard to cut. An 8 pound bar of soap isn’t handy. Use in two weeks to allow all the lye, which is caustic, to finish combining with those fats and have nothing left but soap!
While Michael makes soap, I make candles.
I use recycled candle glass and canning jars for my holders. I remove any old wick holders. I crimp on a new wick holder (came with the wick) and stick it to the bottom of the glass with candle holder paste. I secure the top of the wick with a toothpick (or other implement), which holds the wick in the middle of the tallow as it solidifies.
I melt my tallow. Lately I’ve added herbs as it melts. I remove the herbs. I pour. I wait. I trim the wick. It burns.
Cleanly.