If you are labeling and selling not as a cosmetic (no cosmetic claims), but just as soap, you can list it however you like, as the Consumer Product Safety Commission is who regulates it, and they have no label requirements for soap.
Soap | CPSC.gov
https://www.cpsc.gov/FAQ/Soap
Marie Gail is directing her information more at soapers who make cosmetic claims and thus must follow FDA guidelines.
If it were me, I'd still put the name of the product, the ingredients in an easy to read list in descending order, and contact information.
You could list the brewed coffee as that, where water would have gone if no coffee was involved.