# Hammer Mackerel

**Knowledge ID**: 13718

## Description

Fishers once tried to gulp down a mackerel raw, only to break their teeth because its head was as hard as a hammer. Scholars dubbed this strange fish the hammer mackerel. Cooks worked tirelessly to find the best way to prepare it and found that if you keep a hammer Mackerel in a tank and feed it butter for a month, it turns gentle and tender.

## Learning Sources

### How to Learn

#### Study These Items

- [Hammer Mackerel](/item/821002.md)