Ingredients

  • 2 tablespoons vegetable oil, plus more for frying
  • Two 1-inch pieces of peeled fresh ginger1 cut into thin matchsticks, 1 cut into 8 thin rounds
  • 2 tablespoons granulated sugar
  • 1 1/2 tablespoons Asian fish sauce
  • 1 tablespoon palm sugar or light brown sugar
  • 1/2 teaspoon freshly ground black pepper
  • 1 cup plain unsweetened coconut water
  • 6 large shallots, thinly sliced
  • 2 Thai chiles, halved lengthwise
  • 2 garlic cloves, minced
  • 3 scallions, white and light green parts only, cut into 2-inch pieces
  • Four 8-ounce skinless catfish fillets, halved crosswise
  • Chopped cilantro, for garnish
  • Steamed rice, for serving

Method

  • In a small skillet, heat 1/4 inch of oil until shimmering.
  • Add the ginger matchsticks and fry over moderate heat, stirring, until browned and crisp, about 2 minutes.
  • Using a slotted spoon, transfer the fried ginger to paper towels to drain.
  • In a small saucepan, combine the granulated sugar with 1 tablespoon of water.
  • Cook over moderate heat until a deep amber caramel forms, 3 to 4 minutes.
  • Whisk in another 2 tablespoons of water and cook over low heat until the caramel is dissolved, 1 minute.
  • Add the fish sauce, palm sugar, black pepper and 3/4 cup of the coconut water and simmer over moderate heat until the caramel sauce is reduced to 1/2 cup, 3 to 5 minutes.
  • In a large enameled cast-iron casserole, heat the 2 tablespoons of oil until shimmering.
  • Add the ginger rounds, shallots, chiles and garlic and stir-fry over moderately high heat until the shallots are golden, about 3 minutes.
  • Add the caramel sauce and scallions and simmer until the sauce is reduced by half, 3 to 5 minutes.
  • Nestle the catfish fillets in the sauce and cook over moderately high heat, turning once, until caramelized and cooked through, about 6 minutes.
  • Using a spatula, transfer the catfish fillets to a serving platter.
  • Add the remaining 1/4 cup of coconut water to the casserole and cook over low heat, scraping up any browned bits from the bottom, until the sauce is hot, about 3 minutes.
  • Spoon the caramel sauce over the catfish.
  • Scatter the fried ginger matchsticks and cilantro over the fish and serve with steamed rice.