Crispy Fried Fish with Chili Tamarind Sauce

Why You’ll Love This Recipe

• Restaurant-level crackling skin with a simple home kitchen method.
• Bold, balanced Thai flavors: sweet, sour, salty, and spicy in a glossy glaze.
• Flexible: works with seabass, tilapia, or fillets; heat level is easy to adjust.
• Fast: while the oil heats, you prep the sauce—dinner in under an hour.

Grocery List

• Produce: Whole seabass or tilapia, garlic, shallots, Thai bird’s eye chilies, Thai basil, limes, cilantro (optional), scallions (optional)
• Dairy: None
• Pantry: Rice flour or cornstarch, neutral oil, tamarind concentrate, fish sauce, palm or light brown sugar, jasmine rice (for serving)

Full Ingredients

For the Crispy Fish

• 1 whole seabass or tilapia (1.5–2 lb / 680–900 g), cleaned, scaled, patted very dry
• 3/4 tsp kosher salt
• 1/2 tsp ground white pepper (or black pepper)
• 1/3 cup (45 g) rice flour or cornstarch, plus 1 tbsp for touch-ups
• 1.5 quarts (1.4 L) neutral oil (rice bran, peanut, or canola), for frying

Sticky Chili–Garlic–Tamarind Sauce

• 2 tbsp neutral oil
• 4 garlic cloves (about 15 g), finely minced
• 2 small shallots (about 60 g), finely chopped
• 4–6 Thai bird’s eye chilies, thinly sliced (seed to reduce heat), or 1–2 serranos
• 3 tbsp tamarind concentrate (not sweetened syrup)
• 2.5 tbsp fish sauce
• 3 tbsp palm sugar (45 g), finely chopped (or light brown sugar)
• 3 tbsp water for the sauce, plus 1 tbsp water for slurry
• 1 tsp cornstarch, mixed with 1 tbsp water
• Optional depth: 1 tbsp Thai roasted chili paste (nam prik pao)

Fried Basil Garnish

• 1 cup (loosely packed, ~15 g) Thai basil leaves, thoroughly dry
• Pinch of kosher salt

For Serving

• Lime wedges
• Steamed jasmine rice
• Optional: cilantro leaves, thinly sliced scallions, extra sliced chilies

Step-by-Step Instructions

Step 1: Prep and season the fish

Pat the fish bone-dry, inside and out. Using a sharp knife, make 3 diagonal cuts on each side, about 1/2 inch (1.3 cm) deep. Season the fish all over and into the cuts with the salt and white pepper. Let sit at room temperature for 10 minutes while you heat the oil.

Step 2: Dredge for shatter-crisp skin

Dust the fish lightly with rice flour or cornstarch, tapping off excess. Make sure to work the flour into the slashes and along the fins and tail, where crisping is especially nice. Rest the coated fish 5 minutes so the flour hydrates—this helps it adhere and blister.

Step 3: Fry the fish

Pour oil into a wok or Dutch oven to a depth of about 2 inches (5 cm) and heat to 350°F (175°C). Carefully lower the fish into the oil (tail and head supported with tongs or a spider). Fry 7–9 minutes on the first side until deep golden and blistered. Gently flip and fry 5–7 minutes more, until the thickest part reaches 145°F (63°C) and the fins are crisp. Transfer to a wire rack. For extra crackle, raise oil to 375°F (190°C) and re-fry 60–90 seconds per side, then drain again.

Step 4: Flash-fry the basil

Make sure the basil leaves are completely dry. Return oil to 350°F (175°C). Fry the leaves in a quick handful for 10–15 seconds until glassy and crisp. Scoop out immediately, drain on a rack or paper towel, and sprinkle with a pinch of salt. Set aside.

Step 5: Cook the chili–garlic–tamarind sauce

In a small saucepan or clean wok, heat 2 tbsp neutral oil over medium heat. Sauté garlic and shallots for 2–3 minutes until fragrant and lightly golden. Add the chilies (and nam prik pao if using) and cook 30 seconds. Stir in tamarind concentrate, fish sauce, palm sugar, and 3 tbsp water. Simmer 2–3 minutes, stirring, until the sugar dissolves and the sauce thickens slightly. Add the cornstarch slurry and boil 30–60 seconds more until glossy and syrupy—the sauce should coat a spoon. Taste and balance: add a splash of water if too thick, a pinch more sugar if too tart, or a few drops of fish sauce for saltiness.

Step 6: Plate and sauce

Warm a serving platter. Spoon a little sauce onto the platter, set the crispy fish on top, then spoon the remaining sauce over the fish, letting it pool around the sides. Top generously with fried basil and, if you like, extra sliced chilies, cilantro, and scallions. Finish with lime wedges on the side.

Step 7: Serve hot

Carry to the table immediately while the skin is at peak crackle. Serve with steamed jasmine rice to catch the extra sauce.

Pro Tips

• Dryness is everything: water causes splatter and soggy crust. Pat the fish and basil leaves extremely dry.
• Score the fish: slashes help heat penetrate evenly and create more crisp surface area for the sauce.
• Use rice flour (or cornstarch) rather than wheat flour for a lighter, glassy crunch.
• Balance the sauce by taste: aim for equal parts sweet, sour, salty with a comfortable heat level.
• Double-fry for pro-level crackle: a short second fry at 375°F (190°C) re-crisps the crust after resting.

Variations

• Fillet version: Use 4 skin-on fillets (5–6 oz / 140–170 g each). Dust and pan-fry in 1/4 inch oil, 3–4 minutes per side at medium-high. Sauce as written.
• Air-fryer: For a 1.25–1.5 lb tilapia that fits your basket, lightly oil and dust with rice flour. Air-fry at 400°F (205°C) for 16–20 minutes, flipping halfway. Sauce separately. Texture is slightly less shattery than deep-fried but still great.
• Deeper, smokier sauce: Stir in 1–2 tbsp Thai roasted chili paste (nam prik pao) with the chilies for umami depth.

Storage & Make-Ahead

The crispy fish is best right away. Make the sauce up to 3 days ahead; refrigerate and gently rewarm, thinning with a splash of water if needed. Fried basil must be made just before serving. Leftover fish (sauced separately) keeps 1 day in the fridge; re-crisp on a rack at 425°F (220°C) for 8–12 minutes. Store sauce and fish separately to preserve texture.

Nutrition (per serving)

Approximate for 1 of 3 servings: 560 calories; 35 g fat; 36 g carbohydrates; 44 g protein; 1,200 mg sodium; 28 g sugars. Values will vary with oil absorption and fish size.