What Is Sperm Ascetti?

In Moby Dick, the protagonist and narrator, Ishmael called the Ishmael. He experienced a sort of ecstasy as he squeezed the lumps of fresh sperm ascetti out of the head of the recently murdered sperm whale. An 1874 memoir from a whaler named William M Davis told of how luxurious it was to wade into pots of sperm ascetti in order to strain out the fibers. This is the brain of a fucking whale they're talking about, right? They used to be because it was so worth it. So that means that they're writing half hard. You'll see half hard. It's just like calm. No one could certainly say that they named this