Directions

1. Preheat a grill pan over medium heat.
2. Place oil, tamarind pulp, nuoc nam, garlic, shallots, chile, turmeric, shrimp paste, lemongrass, sugar, ginger, and salt in the bowl of a food processor; pulse until a smooth paste is formed.
3. Place banana leaves on the grill for about 2 seconds to make them more pliable. Using tongs, transfer them to a work surface. Trim tops and bottoms of each leave and place a fish fillet in the center of each leaf. Evenly divide the oil mixture between each fillet and spread over fish in an even layer.
4. Working with one fish at a time, fold one side of the leaf over the fish, then the other, then fold in ends. Repeat process until all fillets are wrapped. Wrap banana-leaf-wrapped fish in aluminum foil.
5. Place foil-wrapped fish on grill and grill, turning once, until a metal skewer or sharp, thin-bladed knife inserted into the center of the fish comes out hot, 5 to 6 minutes per side.
6. Carefully unwrap fish from foil and place each banana-leaf-wrapped fillet on a plate; serve immediately with lime wedges.