Otak-otak (or otah in Singapore English) is a Southeast Asian preparation of spiced fish paste blended with coconut milk, wrapped in banana leaf or coconut leaf, and cooked — grilled over charcoal in Singapore and parts of Malaysia, or steamed to a softer form in the Muar district of Johor (Malaysia).
The name is Malay: otak means brain. The reference is to the soft, custardy, slightly trembling texture of the steamed version. The grilled Singaporean version has a firmer, slightly charred exterior that makes the brain comparison less obvious, but the name persists for both.
Two Versions: Singapore vs Muar
The debate between these versions is not trivial — they taste and feel significantly different.
Singapore Otah (Grilled)
- Texture: Firm on the outside from the charcoal grill, soft inside
- Color: Deep orange-red from the spice paste; visible char marks on the banana leaf
- Cooking: Grilled over charcoal (or a gas grill) 3–4 minutes per side; the banana leaf scorches and imparts a smoky, slightly vegetal fragrance
- Spice base: Typically includes lemongrass, galangal, chili, shallots, turmeric, and often kaffir lime leaves
- Fish: Spanish mackerel (tenggiri) is traditional; the paste is quite fine-grained
- Coconut milk: Present but not dominant — the mixture is drier than the Muar version
- Where to find: East Coast Road area in Singapore; Bengawan Solo; hawker stalls throughout the island
Muar Otak-Otak (Steamed or Coconut Leaf-Grilled)
- Texture: Softer, more custardy, almost pudding-like — the fish paste has more coconut milk and egg
- Color: Lighter orange, less intensely colored
- Cooking: The classic Muar version is wrapped in thin coconut leaf strips (daun nyiur) rather than banana leaf, and may be grilled briefly or steamed
- Spice base: More coconut milk-forward; slightly milder
- Fish: Also mackerel; sometimes a coarser texture than the Singapore version
- Where to find: Muar, Johor; sold at Johor Bahru hawker areas; some specialty shops in Singapore
The Muar version is considered by many Johor Malaysians to be the authentic traditional form; the Singapore grilled version is more widely known internationally.
The Fish Paste
The paste is the core of the dish. Spanish mackerel (ikan tenggiri) is preferred because of its firm flesh, low bone content when processed, and mild but distinctive flavor. Alternatives: Spanish mackerel can sometimes be sourced at Asian fishmongers; mackerel fillets from a regular fishmonger work; cod or pollock are the most neutral Western substitutions (they produce a bland but functional paste).
Making the paste: Remove all skin and bones from the fish. Chop roughly. Process in a food processor until you have a smooth paste (1–2 minutes). The paste should be slightly sticky and hold its shape.
The Spice Paste (Rempah)
- 4 stalks lemongrass, lower pale section only, roughly chopped
- 2cm fresh galangal
- 2cm fresh turmeric (or 1 teaspoon ground)
- 6 shallots
- 4 dried red chilies (soaked) + 2 fresh red chilies (for color and heat)
- 3 kaffir lime leaves, central rib removed
- 1 teaspoon shrimp paste (belacan)
Blend all to a smooth paste.
The Complete Recipe (Singapore Grilled Style)
Makes: 12–15 parcels Time: 45 minutes prep, 8–10 minutes per grill batch
Ingredients
- 500g Spanish mackerel fillet, skinned and deboned
- Full spice paste (above)
- 100ml coconut milk (full-fat)
- 2 eggs
- 1 tablespoon fish sauce
- 1 teaspoon sugar
- Salt to taste
- Banana leaves — thawed from frozen (available at Asian grocery stores), cut into 20cm × 20cm squares, softened briefly over a gas flame or in boiling water to prevent cracking
Method
1. Make the fish paste: Process mackerel in a food processor until smooth. Transfer to a bowl.
2. Mix: Combine fish paste with spice paste, coconut milk, eggs, fish sauce, and sugar. Mix until homogeneous. Season with salt. The mixture should be thick, orange-red, and hold its shape.
3. Wrap: Place a banana leaf square on a flat surface. Put 2–3 tablespoons of mixture in the center. Fold the leaf over into an envelope shape; secure with a toothpick or fold the ends under. The parcel should be flat, roughly 4cm × 10cm.
4. Grill: Over medium charcoal or medium gas heat, grill parcels 3–4 minutes per side. The banana leaf will char and smoke; this is correct. The inside is cooked when it feels firm to a gentle press through the leaf.
5. Serve: Allow to cool 1–2 minutes; open at the table. The banana leaf and the charred surface inside contribute fragrance. Eat with white rice or on its own.
The Banana Leaf Function
Banana leaf wrapping is not purely structural — it contributes flavor. The leaf's cell walls release aromatic chlorophyll compounds and a slight vegetal sweetness when exposed to heat. Grilling specifically creates a smoky, slightly resinous note from the scorched leaf surface that permeates the fish cake inside.
Banana leaves from frozen are functional but slightly less fragrant than fresh. Aluminum foil can substitute structurally but eliminates the flavor contribution entirely.
Related reading: Nasi Lemak Malaysian National Dish Guide | Laksa Singapore Malaysia Guide | Hainanese Chicken Rice Guide
The full recipes live in the book.
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