The Tangy, Flavor-Packed Grilled Shrimp I'm Making on Repeat This Summer

Shell-on grilling and a bold tamarind marinade keep these prawns juicy and flavorful. Plus, you can easily swap shrimp for the prawns for ease.

Grilled prawns with herbs and a side of sauce

Serious Eats/ Vy Tran

Why It Works

  • Briefly soaking the prawns or shrimp in a salt and baking soda solution keeps them plump and juicy on the grill.
  • Grilling prawns or shrimp head-on and in their shells locks in moisture and adds extra flavor.

Given how often I bake, people assume I favor sweet over savory, but that couldn't be further from the truth. I love savory food, and looking back, I realize the dominant flavor that shaped my palate from my childhood in Vietnam to adulthood wasn't sweetness, but sourness: bright, mouth-puckering, layered sourness. Kumquats and limes, passion fruit, yuzu, and tamarind—these tart ingredients were my flavor playground.

Most of those fruits—kumquat, lime, passion fruit, and yuzu—still grow in my garden here in the US. The only one missing is tamarind. That flavor comes from my memories of Vietnam, where a tamarind tree stood in front of our house. I adored that tree. It provided a cool place to escape the heat, and its brown pods, with their sticky-sweet and tangy pulp, were a constant source of snacks and inspiration. My mom would mash up the brownish pulp with warm water to extract the meat from the seeds and fibers to make everything from dipping sauces to candies, but one dish stood out: grilled tamarind prawns (tôm nướng me).

Tamarind is now an integral part of my cooking arsenal. It adds a complex sourness that's subtle and rich—less sharp than lime or vinegar—with a gentle fruitiness that enhances heat, balances sweetness, and elevates just about everything it touches. It's the flavor I return to most, and here, it stars in my tôm nướng me. Tôm translates to prawns/shrimp, nướng means grilled, and me means tamarind. 

For her version, my mom mashed fresh tamarind pulp with warm water to extract the juice, then combined it with fish sauce, sugar, garlic, shallots, and pepper to marinate the prawns. She'd grill them over a charcoal brazier, and as soon as they were cool enough, we'd rip off the heads, suck out the savory juices, and crunch into the crackly shells to get to the juicy, tangy, smoky meat underneath.

Grilled prawn being dipped into a bowl of sauce

Serious Eats/ Vy Tran

Choosing and Prepping the Prawns or Shrimp

I call for head-on, shell-on prawns, preferably large tiger prawns, size 8/9 (meaning 8 to 9 per pound). If you can’t find prawns, colossal shell-on shrimp work beautifully too (preferably with their heads, but the recipe will also work with headless shrimp.)

To prepare the prawns, use a sharp knife or kitchen shears to butterfly them along the back—cut about halfway through the meat, leaving the head, shell, and tail intact so the two halves stay connected. Carefully separate the shell from the meat just slightly. This step helps the marinade seep into all the nooks and crevices, infusing the prawns with flavor while they rest.

Keeping the heads and shells on isn't just for looks—the shells act like insulation, protecting the delicate meat from direct grill heat, helping them retain moisture and preventing the shellfish from drying out. The heads, meanwhile, are packed with flavor and fat, adding richness as they grill and flavoring the marinade during soaking.

To keep the meat extra-plump and tender, I borrow a technique from Kenji's grilled shrimp recipe and give the prawns a quick soak in ice water with salt and baking soda before marinating. This firms them up and helps preserve that juicy snap when you bite in.

Once soaked and patted dry, the prawns get tossed in the tamarind marinade and left to rest in the fridge for about four hours, flipped halfway through to ensure even coating. The acidic marinade gently tenderizes the prawns, so even if you leave them on the grill a touch too long (which, let's be honest, happens to all of us), they’ll still turn out pleasantly tender and flavorful.

The Sweet, Tart, and Tangy Dipping Sauce

While the prawns marinate, I prepare a simple tamarind dipping sauce with fish sauce, sugar, garlic, and a bird's-eye chile. It's just spicy enough to keep you coming back for another bite. You can turn up the heat with more chilies if that's your style. Simmer the mixture gently until thickened, then let it cool to room temperature while you grill the shrimp, and you're good to go.

Grilling and Serving the Prawns

When ready to grill, shake off the excess marinade before cooking the prawns over direct heat for just a few minutes per side. The shells will become crackly and fragrant, and the meat will turn opaque and tender. Don't overdo it—shrimp and prawns are famously easy to overcook. Pile the succulent, smoky, sweet shellfish onto a platter, dip them generously into the tangy, spicy sauce, and eat them while they're still warm.

For me, this dish is more than delicious—it's an edible memory, a snapshot of sticky summer nights, the hiss of a charcoal grill, and the zing of tamarind on my tongue.

Recipe Details

The Tangy, Flavor-Packed Grilled Shrimp I'm Making on Repeat This Summer

Prep 15 mins
Cook 25 mins
Marination and Brining Time: 4 hrs 30 mins
Total 5 hrs 10 mins
Serves 4 to 6
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Ingredients

  • 1/2 cup (144 gtamarind pulp (see notes)

  • 2 pounds (925 g) head-on, shell-on (size 8/9) prawns or head-on, shell-on size 8/9 (colossal) shrimp 

  • 4 teaspoons (9 g) Diamond Crystal kosher salt, divided; for table salt, use half as much by volume or the same weight

  • 1 teaspoon baking soda

  • 1/2 cup (100 g) granulated sugar, divided

  • 1/2 cup and 2 tablespoons (150 ml) fish sauce, divided (see notes)

  • 1/4 cup (30 g) chopped shallot from 2 medium shallots

  • 1/4 cup garlic cloves (about 6 cloves; 30 g) chopped garlic, divided 

  • 1/2 teaspoon freshly ground white pepper

  • 1 red bird's eye chile, thinly sliced

  • A few sprigs of cilantro for garnish

Directions

  1. In a medium heat-proof bowl, add tamarind pulp and 2 1/4 cups hot water. Let stand for 10 minutes. Using a metal spoon, mash tamarind pulp so meat is released from the fibers and seeds. Strain tamarind pulp through fine mesh sieve into another medium bowl. You should get approximately 1 1/2 cups tamarind juice.

    A preparation step for making a tamarind marinade showing straining sediment from liquid

    Serious Eats/ Vy Tran

  2. To Prep the Shrimp: Using a sharp knife or kitchen shears, butterfly each prawn or shrimp by cutting along the back, going about halfway through the flesh. Leave the shell, head, and tail intact, and keep the two halves connected without flattening the meat. Remove vein and discard.

    Steps to prepare a prawn showing removing the shell with scissors and deveining using a toothpick

    Serious Eats/ Vy Tran

  3. In a large bowl, combine 4 cups (960 ml) ice water, 1 tablespoon salt, and baking soda. Mix well. Add deveined prawns or shrimp and soak for 15 minutes. Remove prawns and pat them dry with paper towels.

    Tray of fresh prawns on ice

    Serious Eats/ Vy Tran

  4. In a large bowl, whisk 1 1/4 cups prepared tamarind juice, 1/4 cup and 2 tablespoons sugar, 1/4 cup and 2 tablespoons fish sauce, shallot, 2 tablespoons garlic, 1 teaspoon salt, and pepper until sugar dissolves. Add prawns to marinade and refrigerate for 4 to 6 hours, flipping them halfway through.

    Tongs holding a marinated prawn other prawns in a marinade tray

    Serious Eats/ Vy Tran

  5. For the Dipping Sauce: In a small saucepan, combine 1/4 cup tamarind juice, remaining 1/4 cup fish sauce, remaining 2 tablespoons sugar, remaining 2 tablespoons garlic, and bird’s eye chile and bring to a boil over medium-high heat. Turn heat down to medium-low and simmer, stirring often, until sauce is slightly reduced, about 10 minutes.

    Pot with simmering tamarind marinade placed on an induction cooktop

    Serious Eats/ Vy Tran

  6. For a Charcoal Grill: Light one chimney full of charcoal. When all charcoal is lit and top is covered with gray ash, pour out and arrange coals on half of charcoal grate. Set cooking grate in place, cover grill, and allow to preheat for 5 minutes.

    For a Gas Grill: Turn all burners to high; cover; and heat grill until hot, about 15 minutes. Leave all burners on high.

    A grill with hot coals glowing beneath the cooking grates

    Serious Eats/ Vy Tran

  7. Clean and oil grilling grate. Shake off excess marinade and place half of prawns or shrimp directly over hot side of grill. Cook , flipping halfway through, until prawns or shrimp are just cooked through and meat is no longer opaque, 2 to 3 minutes per side. Transfer to large platter and repeat with remaining prawns or shrimp.

    Progress of prawns being grilled on a barbecue

    Serious Eats/ Vy Tran

  8. Garnish prawns with a few sprigs of cilantro, and serve immediately with tamarind dipping sauce.

    Grilled tamarindmarinated prawns served on a plate garnished with cilantro

    Serious Eats/ Vy Tran

Special Equipment

Fine-mesh strainer, Charcoal or gas grill, charcoal briquettes and chimney start if using charcoal grill

Notes

The recipe can be doubled and grilled in batches to feed a larger party.

If you want to use tamarind concentrate, see this tamarind primer for guidance.

For the fish sauce, I recommend Three Crab or Red Boat brands.

Make-Ahead and Storage

Both the tamarind marinade and dipping sauce can be made 2 days ahead and brought to room temperature when ready to use.

Nutrition Facts (per serving)
326 Calories
3g Fat
38g Carbs
38g Protein
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Nutrition Facts
Servings: 4 to 6
Amount per serving
Calories 326
% Daily Value*
Total Fat 3g 4%
Saturated Fat 1g 4%
Cholesterol 325mg 108%
Sodium 4144mg 180%
Total Carbohydrate 38g 14%
Dietary Fiber 2g 6%
Total Sugars 28g
Protein 38g
Vitamin C 13mg 66%
Calcium 180mg 14%
Iron 2mg 9%
Potassium 544mg 12%
*The % Daily Value (DV) tells you how much a nutrient in a food serving contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.
(Nutrition information is calculated using an ingredient database and should be considered an estimate.)