Spicy Thai Green Curry From Scratch — Homemade Paste Included

ByNina Sloane

Blistering, citrus-bright, and layered with a heat that builds rather than burns, Thai green curry — gaeng keow waan — is the kind of dish that makes you understand why people keep a wok on the stove every night. Making the paste from scratch is what separates a bowl you remember from one you forget.

Yield: 4 servings  |  Paste prep: 25 min  |  Curry cook: 30 min  |  Total: ~55 min  |  Difficulty: Intermediate

Ingredients

For the Green Curry Paste

  • 8–10 fresh Thai bird’s eye green chilies, roughly chopped (use 4–5 for medium heat)
  • 1 large serrano chili, seeds removed, roughly chopped
  • 3 lemongrass stalks, outer layers peeled away, white and pale-green parts only, thinly sliced
  • One 1½-inch (4 cm) piece fresh galangal, peeled and thinly sliced
  • 3 small shallots, roughly chopped
  • 6 garlic cloves, roughly chopped
  • 2 tbsp fresh cilantro roots and stems, roughly chopped
  • 5 fresh makrut (kaffir) lime leaves, central stems removed, thinly sliced
  • 1 tbsp coriander seeds
  • 1 tsp cumin seeds
  • ½ tsp white peppercorns
  • 1½ tsp shrimp paste (or 1 tsp white miso for a vegan version)
  • 1 tsp fine sea salt
  • 2 tbsp neutral vegetable oil

For the Curry (serves 4)

  • 500g (1 lb) boneless, skinless chicken thighs, cut into bite-sized pieces
  • 1 × 400ml (14 fl oz) can full-fat coconut cream
  • 1 × 400ml (14 fl oz) can full-fat coconut milk
  • 3–4 tbsp homemade green curry paste (from above)
  • 8 small Thai eggplants, quartered (or 1 medium zucchini, sliced into half-moons)
  • 2 tbsp fish sauce, plus more to taste
  • 1½ tsp palm sugar or light brown sugar
  • 5 fresh makrut lime leaves, torn
  • 1 large handful fresh Thai sweet basil leaves
  • 2 fresh red bird’s eye or spur chilies, thinly sliced (to garnish)
  • Steamed jasmine rice, to serve

Instructions

Making the Paste

  1. Toast the spices. Place the coriander seeds, cumin seeds, and white peppercorns in a dry skillet over medium heat. Toast for 60–90 seconds, shaking the pan, until fragrant and very lightly darkened. Tip onto a plate to cool completely, then grind to a fine powder in a spice grinder or with a mortar and pestle.
  2. Blend the aromatics. Put the bird’s eye chilies, serrano, lemongrass, galangal, shallots, garlic, cilantro roots and stems, and sliced makrut lime leaves into a small-capacity high-powered blender or food processor. Add the ground spice powder, salt, shrimp paste, and vegetable oil. Blend on high, scraping down the sides every 30 seconds, until you reach a smooth, deeply green paste — allow 3–5 minutes of blending. Add 1–2 tbsp water only if the blades are struggling. The finished paste should smell almost shockingly fresh and fragrant. Set aside.

Making the Curry

  1. Crack the coconut cream. Pour the full can of coconut cream into a wide wok or large deep skillet over medium heat. Simmer, stirring occasionally, for 8–10 minutes. At first it will bubble and look uniform; then it will thicken and begin to separate — you will see pools of clear, golden oil rising to the surface. This rendered fat is your frying medium, and unlocking it is the single most important technique in this recipe. Do not skip it.
  2. Fry the paste. Turn the heat up to medium-high. Spoon 3–4 tbsp of your green curry paste into the cracked coconut oil. Stir-fry vigorously for 3–4 minutes, working the paste into the oil and pressing it against the wok. The paste will sizzle and pop — that is correct. Cook until it darkens a shade, smells intensely fragrant, and the raw garlic sharpness has mellowed. If you skip or rush this step, those raw notes will persist in the finished curry.
  3. Build the sauce. Pour in the coconut milk and add the torn makrut lime leaves. Stir well, scraping up any paste caught on the base of the wok, then bring everything to a gentle simmer over medium heat.
  4. Cook the chicken. Add the chicken pieces in a roughly single layer. Maintain a steady simmer — not a boil — for 10–12 minutes, turning the pieces once or twice, until cooked through with no pink remaining (internal temperature 75°C / 165°F).
  5. Add the vegetables. Stir in the quartered Thai eggplant. Simmer for a further 3–4 minutes until just tender but still holding their shape — they should have a slight bite, not collapse into the sauce.
  6. Season carefully. Add the fish sauce and palm sugar. Now taste with intention: fish sauce adds salt and umami depth; palm sugar tempers sharp chilli heat; an extra spoonful of paste intensifies fragrance and fire. Adjust until the curry feels balanced — savoury, a little sweet, and as spicy as you like.
  7. Finish and serve. Remove the wok from the heat and fold in the Thai basil leaves — residual heat wilts them perfectly without destroying their perfume. Ladle over steamed jasmine rice in deep bowls and scatter with sliced red chilies. Bring to the table immediately.

Tips & Variations

  • Dialling the heat up or down: Every bird’s eye chili you add or remove meaningfully changes the heat level. For a genuinely mild curry, replace the bird’s eyes entirely with 2–3 long green mild chilies and a small wedge of green bell pepper — you keep the vivid colour and grassy freshness. For maximum heat, keep all seeds in and add a pinch of white pepper to the finished curry.
  • Vegan and vegetarian version: Use 400g pressed, cubed firm tofu or a mix of oyster and king oyster mushrooms in place of chicken. Substitute white miso in the paste for shrimp paste and replace the fish sauce with light soy sauce or coconut aminos in equal amounts.
  • Choosing the right coconut cream: Look for cans containing only coconut extract and water; avoid brands with emulsifiers or stabilisers, which resist cracking. If your cream stubbornly refuses to separate after 10 minutes, simply add 1 tbsp of neutral oil to the wok and proceed — the result will still be excellent.
  • Paste storage: Pour leftover paste into a small glass jar, smooth the surface, and cover with a thin film of oil. Refrigerate for up to 1 week. To freeze, spoon the paste into an ice-cube tray, freeze solid, then transfer cubes to a sealed bag — frozen paste keeps its punch for up to 3 months.
  • Other proteins: Large raw prawns work beautifully — add them at step 7 and cook for just 3–4 minutes until pink and opaque. Thinly sliced beef sirloin needs only 4–5 minutes. For a vegetable-only version, add sweet potato cubes at step 6 (they need the full cooking time) and broccolini florets alongside the eggplant.

FAQ

Why crack the coconut cream instead of just tipping it straight in?

Cracking the cream renders the coconut fat, giving you genuine frying oil. When the curry paste hits real oil at high heat, each aromatic transforms: garlic loses its raw bite, lemongrass opens up fully, galangal mellows from sharp to nuanced. Boiling paste in uncracked cream produces a flatter, sometimes raw-tasting result — the difference is unmistakable and worth every extra minute.

Is Thai green curry hotter than Thai red curry?

In most authentic recipes, yes. Green curry relies on fresh bird’s eye green chilies used in volume — small, thin-skinned, and intensely hot. The Thai name gaeng keow waan (แกงเขียวหวาน) literally means “sweet green curry,” but the “sweet” refers to the colour of the unripe chilies, not a gentle heat level. Red curry typically uses dried red chilies, which can actually be milder than their fresh counterparts.

Can I use fresh ginger instead of galangal?

Ginger is the most widely available substitute, and the same quantity works fine. Be aware, though, that the flavours diverge noticeably: ginger is warm and peppery where galangal is piney, citrusy, and more pungent. The curry will still be delicious, but it will taste noticeably different from the Thai original. Fresh galangal is increasingly available at Asian grocery stores and is worth tracking down.

How should I store and reheat leftover curry?

Cool the curry completely before transferring to an airtight container; it will keep in the refrigerator for up to 3 days. Reheat over medium-low heat, stirring gently — aggressive boiling can break the coconut emulsion and make the sauce look oily. The curry deepens considerably in flavour overnight, so day-two leftovers are often even better than the original.

Sources


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