Oka (Samoan Raw Fish in Coconut Cream)

Oka is Samoa's expression of the Pacific raw-fish-in-coconut-cream tradition — fresh fish (reef fish or tuna) diced, marinated briefly in lime or lemon juice, then dressed in coconut cream with onion, tomato, chilli, and salt. It is the Samoan cognate of Fijian kokoda, Tongan 'ota ika, Cook Islands ika mata, and Tahitian poisson cru. The name oka is sometimes spelled oka i'a (oka = raw/uncooked, i'a = fish). Oliver documents oka as the most eaten raw-fish preparation in Samoa, appearing at every level from roadside stall to high-end resort (Mea'ai Samoa, 2013). The Samoan preparation is distinguished from its Fijian neighbour by a higher heat level (more chilli) and a preference for skipjack tuna (atu, Katsuwonus pelamis) over reef fish. The cultural position of oka in Samoa is equivalent to poke in Hawaiʻi — it is the default way to eat fresh fish.

Fresh fish is filleted, skinned, and cut into 1–2 cm cubes. Skipjack tuna (atu, Katsuwonus pelamis) is the preferred species; yellowfin tuna (Thunnus albacares) is also used; reef fish (parrotfish, emperor) are acceptable but considered less prestigious. The cubes are placed in a bowl and covered with fresh lime juice (or lemon). Marination: 15–30 minutes. The acid turns the fish surface opaque white. The juice is drained (some Samoan cooks leave a small amount for added sharpness). Freshly squeezed coconut cream (pe'epe'e, the Samoan term for first-pressing lolo) is added. Diced onion, diced tomato, sliced fresh chilli (Samoan preparations are hotter than Fijian kokoda), chopped cucumber (a modern addition), and salt are folded through. Sea grapes (limu, a type of marine algae in the Caulerpa genus) are sometimes added for texture and salinity. The dish is served immediately at cool temperature.

Oka is sharper and more assertive than kokoda. The retained acid (Samoan cooks drain less than Fijians), the higher chilli content, and the mineral salinity of the tuna (compared to milder reef fish) produce a brighter, more muscular dish. The coconut cream rounds the acid and heat into a balanced whole. Key species distinction: skipjack tuna has a richer, more iron-y flavour than the mild white flesh of reef fish — it stands up to the lime and chilli without being overwhelmed. Sea grapes (Caulerpa lentillifera or C. racemosa) contribute a briny pop — small green spheres that burst between the teeth, releasing salt and ocean flavour. The overall profile: bright acid, rich coconut fat, moderate chilli heat, iron-rich fish, salt.