Cut fish fillets into thin slices and season with (A) for 15 minutes.
Grind ingredients (B) into a paste. Mix well the ground ingredients with (C). Blend in (D) and seasoning. Add fish slices into the mixture.
Take 1 piece of banana leaf, place three to four daun kadok in the centre. Put three slices of fish and 2 tbsp gravy over it. Form a bundle by folding up both the sides to meet in the centre. Fold up both the ends and staple the middle portion to secure. Make as many bundles of otak-otak as possible.
Steam the bundles for 10 minutes over rapid boiling water. Serve hot with rice or white bread.