In Brazil, there is a soap paste ("sabao pastoso") commonly used to clean aluminum pots with steel wool. I'm guessing the benefit here, compared to normal liquid dishwasing soap, comes only from a higher soap concentration and the pastier consistency (to keep the soap from running downward during scrubbing). But, the paste is black and appears more complicated. Is there more physics here?
And, would there be any drawback (besides cost, since you tend to use more soap when it's more concentrated) in using this paste to clean ceramic plates with a normal sponge?
I'm not familiar with this pasty soap in the USA. We usually use the same liquid dishwashing soap for every surface...is this is a bad practice?