ferdinand feghoot, the great traveler in time and space, was summoned to the planet of the pearl people.
it seems that michael, their greatest doctor of jurisprudence, had been thrown into the vinegar sea by one of his enemies.
feghoot was asked to find him before the vinegar dissolved him completely.

so feghoot waded into the sea of vinegar barefoot, and in less than a minute found michael, who was brought ashore and resuscitated, a little worn, but alive.
feghoot was asked how he'd accomplished this task so quickly.
he, of course, answered in song...

a gritty pearl is michael, lld.