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Mom’s Super Laundry Sauce Recipe
adapted from Whipped Laundry Concentrate
~ This makes 1/2 Gallon of concentrate ~
~ Btw, that’s a full 128 loads of laundry!! ~
1 bar Fels Naptha (Yes, the ENTIRE Bar!)
1 cup 20 Mule Team Borax
1 cup Arm & Hammer Washing Soda (NOT BAKING SODA!!)
4 cups of hot water
Here are what the ingredients look like:
Follow the directions Carefully, adding the ingredients at the wrong time will result in a grainy textured detergent that will not dissolve well in the washer.
Put 4 cups of water in a large heavy saucepan over high heat. While that is heating, mix the borax and washing soda together in a bowl, mixing well, set aside.
Grate the Fels Naptha- the easiest way to do this is to cut it into several smaller chunks and then run it through a food processor- otherwise, you can just grate it with a hand grater or shave it with a knife.
Add the freshly grated soap to the water in the saucepan, stirring almost constantly. Reduce the heat to medium, It will take approximately 10 – 15 minutes for the Fels Naptha to complete dissolve. If it takes longer, your heat wasn’t up high enough. Alternatively, you can melt the fels on the stove over low heat without water then add the water afterwards, stirring it in, as the original recipe called for. I find that it’s much easier to melt IN the water. Absolutely do NOT let this Boil over, or you’ll have a sudsy mess that you do NOT want to contend with!!
It should be a rolling, simmering boil where you must stir Constantly but it does not foam heavily or seem to “creep up” the saucepan. See the photo below- note the amount of “foam” – that’s all you should see.
Once the Fels Naptha has completely melted, remove the pan from the heat and add in the Borax and the Washing Soda, stirring constantly until the powders are completely dissolved, this will take about 3-5 minutes. Do not under-stir or your soap texture will be very grainy rather than smooth. (You can fee the “graininess” on the bottom of the pan, once you can’t feel it, it’s incorporated fully!)
Pour the liquid equally into (2) 1 quart Mason jars.
Add just enough water to bring the contents up to the “shoulders” or Rounded part of the jar, leaving approximately 1 ½ inches of headspace.
Put the lid on the jars and turn them UPSIDE DOWN and let them sit a few hours (about 4 – 5 hours). The reason for this is that the soap is going to Separate into layers while it’s resting and occasionally will form crystals on the bottom. Rather than waste these trying to scrape them off, in the next step we’re going to incorporate them easily! By the way, if you leave it overnight it will have a slightly grainier texture than if you whip it immediately after 4 hours.