Thai Green Curry Paste Seafood Marinade

Name: Thai Green Curry Paste Seafood Marinade
Prep time: 10 min
Total time: 10 min
Yield: 4 servings
Cuisine: Thai
Ingredients: 3 tablespoons (45 g) Thai green curry paste; ½ cup (120 ml) unsweetened coconut milk; 1½ tablespoons (22 ml) fish sauce; 3 tablespoons (45 ml) fresh lime juice, freshly squeezed; 4 leaves kaffir lime leaves, fresh or frozen, finely sliced, ribs removed; 1 tablespoon (12 g) fresh galangal, peeled and minced finely; 1 shallot (30 g) small shallot, minced; 1 clove (5 g) garlic clove, minced; ½ teaspoon (2½ g) palm sugar or light brown sugar

From the MyKitchenBank Kitchen

A vibrant, aromatic marinade that infuses seafood with the bright heat and complexity of Thai green curry. Made with a base of green curry paste, coconut milk, and lime leaves, this marinade works beautifully on prawns, fish, scallops, and squid. The balance of spicy, salty, and citrus notes penetrates delicate seafood quickly, making it ideal for grilling, pan-searing, or baking. Mix in 15 minutes and marinate for as little as 30 minutes for full flavor.

Prep: 10 min
Cook: —
Wait: 30 min
Total: 40 min
Makes: About 1¼ cups (300 ml) marinade, enough for 1.5–2 lb (680–900 g) seafood

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Steps

Before you start

Pat seafood dry before marinating so it absorbs the marinade better
If using frozen lime leaves, thaw them slightly and crush gently to release aromatics
Measure all ingredients before starting to ensure smooth mixing

1
Combine dry aromatics
- In a small bowl, whisk together the Thai green curry paste, minced shallot, minced garlic, and minced galangal.
- The mixture should be smooth and pasty with no lumps.
- This creates the aromatic base of your marinade.
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Ready when: Mixture is uniform and no visible lumps remain
Tip: Use the back of a spoon to break down the curry paste against the side of the bowl if it's very thick.
2
Add coconut milk
- Pour the coconut milk into the bowl and whisk thoroughly to combine.
- The coconut milk will dilute the paste and create a silky base that clings to seafood.
- Whisk for about 30 seconds until fully incorporated.
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Ready when: Coconut milk is evenly distributed with no streaks of paste
Tip: If your coconut milk has separated, stir it first or whisk vigorously to recombine the cream and liquid.
3
Add fish sauce and lime juice
- Whisk in the fish sauce and freshly squeezed lime juice.
- These ingredients add the savory umami and bright acid that balance the spice and sweetness.
- Whisk until fully combined, about 20 seconds.
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Ready when: Marinade is homogeneous and aromatic
Tip: Fresh lime juice is essential—bottled lime juice can taste flat and metallic in this delicate balance.
4
Incorporate lime leaves and palm sugar
- Stir in the sliced kaffir lime leaves and palm sugar.
- The leaves infuse the marinade with citrus and herbal notes, while the sugar balances heat and salt.
- Stir gently to distribute the leaves throughout.
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Ready when: Lime leaves are evenly scattered and sugar is dissolved
Tip: If using frozen lime leaves, crush them lightly before adding to release their essential oils.
5
Marinate the seafood
- Place your prepared seafood (prawns, fish fillets, scallops, or squid) in a shallow dish or zip-top bag.
- Pour the marinade over the seafood, ensuring all pieces are coated.
- For small pieces like prawns or scallops, marinate for 30–45 minutes at room temperature, or up to 2 hours in the refrigerator.
- For thicker fish fillets, marinate for 45 minutes to 1 hour.
- Do not marinate longer than 2 hours or the lime juice will begin to cook the delicate seafood and make it mushy.
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Ready when: Seafood is evenly coated and has absorbed the flavors and aroma
Tip: If marinating prawns or scallops, 30 minutes is often sufficient; if marinating fish, aim for the full 45 minutes to 1 hour for deeper flavor penetration.

Good to know

Tips

The green curry paste is the hero of this marinade—use a good quality Thai brand like Thai Kitchen, Mae Ploy, or Aroy-D for the best flavor and smooth texture.
Kaffir lime leaves are sold fresh or frozen at Asian markets and increasingly at well-stocked supermarkets; they freeze beautifully for months and develop deeper flavor when frozen.
After marinating, pat the seafood dry with paper towels before cooking to encourage browning and crisping on the exterior.
This marinade works wonderfully on the grill (high heat, 2–3 minutes per side for prawns; 3–4 minutes per side for fish fillets), in a hot skillet (medium-high heat, 2–3 minutes per side for most seafood), or roasted at 425°F (220°C) for 8–10 minutes.

Make ahead

The marinade can be made up to 2 days ahead and stored in an airtight container in the refrigerator. Let it come to room temperature before using, or simply stir it well. The lime leaves will infuse the marinade further, deepening the flavor over time.

Storage & reheating

Unused marinade keeps in an airtight container in the refrigerator for up to 3 days. Do not reuse marinade that has come into contact with raw seafood. Marinated seafood should be cooked within 2 hours of removing from the refrigerator.

Substitutions

kaffir lime leaves, fresh or frozen → Zest of 1 lime, finely minced, or 1 teaspoon dried lime leaf powder. Fresh kaffir lime leaves deliver the most authentic flavor, but zest is a good substitute that adds bright citrus without the herbal complexity.
fresh galangal → 1 tablespoon fresh ginger, minced, or ½ teaspoon ground galangal. Ginger is warmer and less floral; ground galangal is convenient but lacks the fresh bite of fresh galangal.
palm sugar or light brown sugar → Light brown sugar or honey, ½ teaspoon. These are sweeter than palm sugar, so use slightly less. Brown sugar gives earthiness; honey adds smoothness.
fish sauce → Soy sauce, 1 tablespoon, or anchovy paste, ½ teaspoon. Soy sauce is less pungent but still provides umami; anchovy paste is saltier and fishier.