Whole fish, taro, and sweet potato slow-roasted in a traditional underground umu β the heart of Cook Islands feasting.
The umu is the Cook Islands' version of the earth oven. Hot volcanic rocks are buried in a pit, food is wrapped in banana leaves, and everything steams and smokes for hours beneath layers of sacking and earth. The result is incomparably tender meat and vegetables with a subtle smoky flavour. This recipe adapts the method for a home oven.
Serves 6
Preheat oven to 200 Β°C (390 Β°F). Season fish and vegetables with salt. Drizzle coconut cream over the fish. Wrap each item tightly in banana leaves or double-layered foil.
Place taro and sweet potato parcels on a large roasting tray. Lay the fish parcel on top.
Bake for 80β90 minutes. Root vegetables are done when a skewer pierces them easily; the fish should flake cleanly.
Bring everything to the table still in their parcels. Unwrap at the table to release the fragrant steam. Serve with rukau and ika mata.
If banana leaves are unavailable, foil works perfectly.
Add sprigs of lemongrass inside the fish parcel for extra fragrance.
Taste and adjust salt at the very end β flavors concentrate as liquids reduce, and a final pinch of flaky salt sharpens the whole dish.
Mise en place pays for itself: chop, measure and pre-mix everything before the heat goes on, especially for any step that moves fast.
Include chicken pieces or pork ribs in additional parcels.
Add a layer of sliced coconut flesh inside the fish parcel.
Vegetarian: swap the protein for roasted king oyster mushrooms, smoked tofu or cooked chickpeas β adjust seasoning slightly upward to compensate.
Spicier: add a finely chopped fresh chile or a teaspoon of crushed Aleppo/Urfa pepper to the aromatics for warm, layered heat instead of a single sharp hit.
Refrigerate leftovers for up to 2 days. Reheat wrapped in foil in the oven.
The umu has been used in the Pacific for over 2,000 years. In the Cook Islands it is the centrepiece of Sunday lunches and celebrations such as weddings and church feasts.
Yes β place the foil parcels over indirect heat for the same time. The smoky grill adds another dimension to the flavour.
Yes β most of the components can be prepared up to a day in advance and refrigerated separately. Reheat gently and assemble just before serving so textures stay distinct.
Stay close to the role each ingredient plays: swap aromatics for similar ones (shallot for onion, lime for lemon), and keep the fat-acid-salt balance intact. Spice blends can usually be approximated with what's in the cupboard.
Authenticity sits on a spectrum β what matters more is honoring the technique and balance of flavors. If the dish tastes harmonious and respects how cooks in its home region would build it, you're on solid ground.
Per serving (400g / 14.1 oz) Β· 6 servings total
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