Memoria sobre as diversas salgas da sardinha com o methodo de aproveitar as enxovas, e sobre a salga dos peixes grossos, como atum, corvinas, pescadas, gorazes, ruivos, e outros semelhantes etc

A surprisingly vivid snapshot of early‑19th‑century Portuguese life emerges from this practical memorandum on preserving the nation’s most ubiquitous catch. Written at the royal workshop in Lisbon, the author explains why sardines—abundant yet often wasted—must be salted correctly to safeguard public health and protect the market from careless dealers. The text weaves together meticulous instructions on creating a proper brine, warnings against shortcuts, and the state’s push for uniform standards across every port.

Beyond the technical details, the work reveals how officials of the time viewed food safety as a civic duty, mandating inspections and distributing guidelines to curb corruption. Readers gain a sense of the era’s bureaucratic diligence, the everyday challenges of fishermen, and the simple chemistry that kept a humble fish from turning sour. It is both a historical guide and a window into the social concerns that surrounded Portugal’s coastal communities.