1/4 cup (tightly packed) castile bar soap, grated (I used Dr. Bronners peppermint from Target)
1 tablespoon washing soda (use a little more for a thicker soap)
1/4 cup liquid castile soap (I used Dr. Bronners peppermint from Target)
10-30 drops essential oils (optional)
Add grated castile soap to boiling water and stir until dissolved.
Add washing soda and stir.
Add liquid castile soap and stir.
Let mixture cool, then add essential oils.
Transfer to repurposed soap dispenser and use as regular dish soap.
Soap mixture will harden as it sets. If it’s too thick to pour, just add a tiny bit of warm water and give it a good shake to loosen it up.
The amount of washing soda you use will dictate how thick the soap gets, so adjust accordingly. The temperature of your kitchen is also a factor.