For what it's worth in Moscow, ID...

The naval jelly is a gel of phosphoric acid which attacks the iron oxide and
neatly converts it to iron phosphate without using an A?C adapter or
batteries or Windoze.  That iron oxide is rust.  Now you just wash away the
iron phosphate and you have a new, relatively rust free, surface upon which
to flail.

No magic here.  Just that chemistry stuff we learn from rural free hideho.

Navel jelly,  good for dipping, I suspect.   Not similar to toe jam.

pensioner (late for fridays)