My recipe
I've been using this one for years. It's a powder, as I find cooking a liquid soap just way too much to do.
1 large (14 oz) bar Zote soap
1 1/2 cups borax
1 1/2 cups washing soda
or to use other soaps:
2 parts grated soap
1 part borax
1 part washing soda
Grate the soap. Grating while the soap is fresh is much easier. Mix in rest of the ingredients. If using a food processor, pulse the resulting mix in batches to obtain a finer powder. If not using a food processor, grate the soap, put into a bag and let sit in a warm place for a couple of weeks. I put it on top of the water heater. Then you can mix the borax and soda in. Do it in a large bowl and rub together with gloved hands. The dry soap will crumble into a powder as you rub it together with the other ingredients.
Laundress, thanks for all the information on sours in a soap wash, and the importance of warm rinses. I have been using the hot cycle on all my whites, but this new machine only offers a cold rinse for the hot cycle. The old Westinghouse let me have a hot wash/warm rinse. So I tried an experiment today. White load, warm wash/warm rinse, 1/4 cup homemade powder, 2 tablespoons Sun Oxy Wash, 2 tablespoons white vinegar in the softener dispenser.
Well, I am impressed with the results. I was able to increase the soap powder by one tablespoon from my usual dose. Cleaned the whites better. And the warm rinse with addition of the vinegar did rinse cleaner. There is less of a scent on the clothes. Thanks again for the great information.
Lisa