📷 Closely related photo — Photo: Assassas77 / Wikimedia Commons · CC BY-SA 4.0
It's usually made from small anchovies packed in salt and weighted down in the barrel, so the liquid that slowly seeps out is drawn off as sauce.
Saltwater fish is layered with Kampot sea salt and left to ferment for months to years in wooden barrels, producing a dark, pungent, deeply savory sauce that's ladled over rice, dipped into, or used to season nearly every stall dish in the province. Market stalls and roadside shops sell it by the bottle straight from the source village.
Why it's made this way: Kampot's coastal salt flats and fishing grounds made it a natural fish sauce-producing region for generations, and by early 2023 Cambodia's Ministry of Commerce had moved Kampot-Kep fish sauce into the final stages of official Geographical Indication registration, aiming to protect the name for sauce made only there.