I got online and found oodles of dishwasher soap recipes and hated them all. Most looked like they wouldn't work for our family. We are the family that has to check our glasses before using because there is always goop dried on inside it. I cook, and cook a lot, so the dishes are actually dirty when they go into the dishwasher. Somehow some of that goop ends up on the inside of our drinking glasses.
My TSP'd dishwasher soap took care of the goop but it was the "P" in the TSP that did it. I needed something that gave the dishes that "slip" until rinsed so that the goop wouldn't stick. I found it!
Here is my dishwasher soap recipe. It works well for us and is much cheaper than the store bought. I had most of this stuff on hand (I had to buy the castile soap).
Homemade Liquid Dishwasher Soap
6 cups water
3/4 cup washing soda
1/2 cup Borax
1/4 cup liquid castile soap
Add two cups of COLD water to this mix.
Let sit until cooled completely. I let it sit overnight.
This stuff gels up pretty thick. Take a hand mixer or hand immersion blender and mix up this big, gloopy, jelly mess. Slowly add an additional TWO CUPS of cold water while blending. It will still be thick but not a solid gel chunk.
Pour into a bottle.
If I do it again:
I think scented castile soap would be very nice!