Trey Chramh

Trey chramh (literally 'smoked fish' in Khmer-Cham) is the Cham Muslim community's traditional fish preservation technique, distinct from both Khmer prahok (fermentation) and Vietnamese ca kho (caramel-braise). The Cham developed cold-smoking using rice husks and coconut shells as the smoke source, which produces a milder, sweeter smoke than wood-smoking. The fish (typically snakehead or freshwater catfish) is brined in salt and turmeric for hours before smoking, which both preserves the flesh and gives it the dish's signature yellow color. The smoked fish is then grilled for serving — the two-stage preparation creates a complex smoke-and-char flavor profile. Found in Cham river villages along the Mekong and at specialty Cham Muslim eateries in Phnom Penh.

Tear off a piece of trey chramh with your fingers: the exterior is char-flecked from grilling, golden-orange beneath from turmeric, the smoke aroma deep but not overwhelming. The flesh is firm-yet-flaky, having both preserved (from brine) and concentrated (from smoke). The smoke isn't sharp like wood-smoke — softer, sweeter, with a coconut-husk undernote. Dip a piece in the tangy lime-fish-sauce dressing; eat with a mouthful of rice. Cham river-village fish-preservation craft at its peak.

Cold-smoking at 65°C is fundamentally different from hot-smoking (90-110°C) or grilling (200°C+) — the fish is dehydrated slowly and infused with smoke compounds without being cooked. The turmeric brine penetrates the fish flesh during the 4-hour soak, both seasoning and dyeing it. Coconut-shell smoke contains different phenolic compounds than wood smoke (more guaiacol, less furfural), which produces a milder, slightly sweet flavor.