Laundry Detergent :)
Add 3 pints of hot water to the soap shavings and simmer on low - medium heat until the soap is dissolved. Don't let the water boil, or you will have suds everywhere. I'm not going to elaborate on how I know that. Ha Ha!
Then, add 1/2 cup of washing soda to the liquid. Washing soda is available in the aisle with laundry detergent at most grocery stores and cost around $2.00 per box. This size box is good for many batches of detergent. (Please excuse the peeling paint on the back of my stove, it works well, but isn't going to win any beauty contests.)
Pour in 1/2 cup of borax powder too. This is also found in the laundry aisle and costs around $2.00 as well.
Laundry Detergent Recipe:
Here is the recipe that I use: