Pla Rad Prik (Fried Fish with Chilli Sauce)

In pla rad prik, crisp fried fish meets the bold sweet-sour heat that defines many Thai table dishes. The fish is lightly floured and fried until golden, then served with a glossy sauce of tamarind, palm sugar, fish sauce, garlic and shallot, giving sharpness, sweetness and savoury depth in one spoonful. Adding the sauce just before serving keeps the skin and coating crunchy, while fried dried chillies bring extra heat and texture. It is best served straight away with rice, letting the sauce soak in without losing the fish’s crisp finish.
Cuisine style Thai home-style fish dish
Spice level Hot
Cooking style Crowd-friendly
Time commitment Under 1 hour

Why this recipe works

  • Crisp fish, glossy sauce: Drying and lightly flouring the fish helps it fry to a crisp finish, while adding the sauce just before serving preserves the texture.
  • Sweet-sour balance: Tamarind, lime, palm sugar and fish sauce create the sharp, sweet and savoury balance that defines the dish.
  • Big Thai flavours: Garlic, shallot and fried dried chillies give the sauce aromatic depth, heat and a distinctive savoury edge.

Get the most out of this recipe

Adjust the heat

  • For less heat: Shake out more of the chilli seeds before frying, or use fewer fried chillies as the final garnish.
  • For more heat: Leave more seeds in the dried chillies, or scatter extra fried chilli over the fish just before serving.
  • Keep the heat balanced: If the sauce tastes too sharp or fiery, adjust with a little more sweetness or fish sauce rather than diluting it heavily.

Texture tips

  • Dry the fish well: Moisture on the skin stops the coating from frying cleanly, so pat the fish thoroughly dry before flouring.
  • Sauce at the last moment: Spoon the chilli sauce over the fish only when ready to serve so the coating stays crisp underneath.
  • Shake off excess flour: A light, even coating fries more cleanly than a thick layer, which can turn heavy or patchy.

Ingredient notes

  • Choosing the fish: Sea bass works well because it has firm flesh and delicate flavour; sea bream is a good alternative with a similar texture.
  • Tamarind brings the sourness: Tamarind paste gives the sauce its rounded, fruity tang, which is different from lime juice alone.
  • Palm sugar flavour: Palm sugar adds a caramel-like sweetness that rounds out the fish sauce and tamarind.

Make-ahead tips

  • Store fish and sauce separately: Keeping the sauce separate helps protect the fish coating from becoming soft in the fridge.
  • Reheat for best texture: Warm the sauce gently with a splash of water, and reheat the fish in a 200°C (390°F) oven until piping hot.
  • Best served fresh: The dish is at its crispest immediately after frying, especially once the sauce has been added.

Equipment you'll need

Ingredients
Instructions
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  1. Pat the sea bass dry, then make 3 shallow diagonal slashes on each side. Put the plain flour in a bowl and lightly coat the fish all over, shaking off any excess.
  2. Thinly slice the shallots and finely chop the garlic. Snip the dried red chilli into short pieces and shake out most of the seeds for a cleaner heat.
  3. Heat the vegetable oil in a wok or large frying pan over medium-high heat until a small pinch of flour sizzles immediately. Fry the dried red chilli for 20 to 30 seconds until darker and crisp, then lift out with tongs and set aside.
  4. Carefully lower the fish into the hot oil and fry for 6 to 8 minutes, turning once, until deep golden and the flesh flakes easily. Lift out and drain briefly, then place on a serving plate.
  5. Carefully pour off most of the oil, leaving about 2 tbsp in the wok. Add the shallots and cook over medium heat for 2 to 3 minutes until softened, then add the garlic and cook for 30 to 60 seconds until fragrant.
  6. Whisk the tamarind paste, fish sauce, palm sugar and water together, then pour into the wok. Simmer for 3 to 5 minutes, stirring, until glossy and lightly thickened.
  7. Squeeze in the lime juice, then taste and adjust with a little more lime if you want it sharper. Spoon the hot sauce over the fish and scatter over the fried chillies just before serving.

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Recipe notes

Tips

  • For the best crunch, make sure the fish is very dry before flouring, and keep the oil hot enough that the coating sizzles immediately.
  • If you prefer a smoother sauce, whisk the tamarind paste with the water until fully dissolved before adding it to the pan.
  • Take care with hot oil, and avoid this dish for vulnerable groups if you cannot be confident the fish is cooked through; it should flake easily and be opaque at the thickest part.

Substitutions

  • Replace sea bass with sea bream for a similar texture and flavour.
  • Replace palm sugar with honey for a slightly different sweetness.
  • Replace plain flour with rice flour for a lighter, crisper coating.

Storage

  • Refrigerate up to 2 days
  • Store the fish and sauce separately in airtight containers. Reheat the sauce gently in a saucepan with a splash of water, and reheat the fish in a 200°C (390°F) oven until piping hot; add the fried chillies at the end to keep them crisp.

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Recipe overview

  • Servings: 2 servings
  • Total time: 55min (45min active)
  • Difficulty: Medium
  • Cuisine: Thai
  • Allergens:
    Fish Gluten Wheat

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