I'd been wondering recently why the price of laundry detergent had gone through the roof. My musings took place mostly in the detergent aisle of the grocery store, and I didn't take it any further than that. But the sticker shock when confronted with the price hikes left me with the firm and definite conviction that something was going on in the laundry detergent business, and it was more than just the generalized price increases we saw when gasoline was $4/gallon.
Today I read a blog post on the Foundry that shed a glimmer of light on the question:
When Congress passed its last major energy legislation in 2005, a minor provision was added late in the legislative process that created a $1-per-gallon tax credit for renewable diesel fuel created through thermal depolymerization. The measure was included to benefit a single firm that produced boiler fuel from turkey waste, but in 2007 the Internal Revenue Service ruled that the tax credit also applied to other livestock waste. This led corporate giants ConocoPhillips and Tyson Foods to form a joint venture that turned chicken, cow, and pig fat into diesel fuel.
But just as ethanol mandates drove up the price of food, diverting Tyson’s animal fat into the energy market drove up the costs of manufacturing soap. So the soap lobby fought back and earlier this year Congress cut the thermal depolymerization tax credit in half. This made the Conoco/Tyson venture unprofitable, which they have since discontinued.
Whether this will have any effect on the price of laundry detergent remains to be seen.
The other night I was looking through an old cookbook I inherited from my mother-in-law. I started out looking for rhubarb recipes but ended up thumbing through the entire collection. The cookbook contained recipes contributed by various women in the area south of Mankato. I found a soap recipe, which the author suggested could be used for laundry soap by grating the final product into your washing machine.
This did not send me rushing out to the store to buy lye, however. Many years ago, not long after having earned a chemistry degree, I decided to experiment at home with soap making. I found a couple recipes, gathered together the tin cans I had filled with a variety of different fats (bacon grease poured on top of chicken fat, etc.) and got out a can of draino. As I recall, I may have used my since forgotten chemistry knowledge to somehow remove the impurities in the fat. I don't remember how I did that.
What I do remember is that I never used the resulting product for anything. It was greasy. Maybe I didn't use enough lye. Store-bought soap suddenly seemed to be a miraculous invention when compared with the results of my foray into soap making. I couldn't summon up any motivation to continue experimenting with soap making.
So I'm a little less than enthusiastic to try this old cookbook recipe. But maybe if the economy gets bad enough, homemade soap may make a comeback, and we'll be seeing articles in those magazines in the checkout aisle titled, "Tips to Keep your Soap from Getting Too Greasy."