I got this recipe from The Hippy Homemaker blog.
Homemade Dish Soap
1/2 cup Dr. Bronner’s Sal Suds
1/2 cup white vinegar
1/2 cup warm distilled water
1 tsp. citric acid (if you don’t have this, substitute lemon juice)
2 tsp. kosher salt
20 drops essential oil
In a medium sized bowl combine warm water and salt until salt is completely dissolved.
In a separate bowl, combine Sal Suds, vinegar, and citric acid.
Stir Sal Suds/vinegar mixture into salt water mixture and continue stirring until thickened. If adding essential oils, you can add them now.
Store in a recycled dish soap container.
NOTE:I have found that when using any other kind of salt besides kosher salt, this recipe will turn back to liquid if you add essential oils. You can make this recipe with sea salt or table salt but adding essential oils to that concoction might make it watery again. Thanks so much to one of my readers, Sherrie, for helping me experiment further with this!