I’m convinced you cannot taste single protons. Water self ionizes, so there will always be acidic species (H+, H3O+, …) way way above the concentration of singl

I’m convinced you cannot taste single protons. Water self ionizes, so there will always be acidic species (H+, H3O+, …) way way above the concentration of single molecules. https://en.wikipedia.org/wiki/Self-ionization_of_water https://en.wikipedia.org/wiki/Self-ionization_of_water