Cooking in
British Columbia
Thai · Central Thailand
Phrik Gaeng Keow Wan — Green Curry Paste / พริกแกงเขียวหวาน
Green curry paste is the most technically demanding of the Thai curry pastes — the fresh aromatics must be worked to an ultra-fine consistency or the paste will produce a stringy, separated curry rather than a smooth, fragrant one. The colour comes not from green chillies alone but from the combined green of fresh lemongrass, kaffir lime rind, galangal, krapao or horapha leaves, and the fresh green spur chillies (prik chee fah khiao) and bird's eye green chillies (prik kee noo khiao). The fresh aromatics must be pounded in the correct sequence — dried ingredients first, then progressively moister — or the wet materials will prevent the dry from breaking down. A properly made paste should be brilliant emerald green with a fine, almost smooth texture.
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I
The Market List
The benchmark for each ingredient, and who stocks it near you. Tap a stockist to go straight to the product.
15 g
dried shrimp paste (kapi)
wrapped in foil and dry-roasted until fragrant
5 g
white peppercorns
whole
Your own market
40 g
fresh lemongrass
lower third only, outer leaves removed, sliced thin across the grain
Origin · ThailandChoose your town to see who stocks it →
30 g
10 g
kaffir lime rind
outer rind only, pith minimised, sliced into fine strips
Not yet stocked in British Columbia
60 g
shallots
peeled, roughly chopped
Your own market
30 g
garlic
peeled, roughly chopped
Your own market
70 g
fresh spur chillies, green (prik chee fah khiao)
60–70% of total chilli weight; stems removed
Your own market
30 g
fresh bird's eye chillies, green (prik kee noo khiao)
30–40% of total chilli weight; stems removed
Your own market
10 g
fresh krapao or horapha leaves
leaves only
Not yet stocked in British Columbia
1 tsp
fine sea salt
to assist abrasion throughout pounding
Your own market
Each tap is counted, so the stockist sees the demand Provenance sends them.
II
The Method
1
Wrap the kapi in foil and set it directly over a low flame or in a dry pan until it smells toasted and slightly smoky, about 2–3 minutes per side, then unwrap and allow to cool — toasting drives off raw ammonia and concentrates the paste's savour, so it deepens the curry rather than dominating it. Place the white peppercorns and salt in the mortar and pound to a fine, uniform powder; no whole peppercorns should remain visible. The salt acts as a grinding medium here, giving the peppercorns something to break against so the powder comes fine and even.
2
Add the cooled kapi to the mortar and pound it into the pepper powder until fully amalgamated — the paste must be cool, or its moisture will turn the dry powder to a slick that resists further work. The mixture should be dry and sandy in texture, with no separate lumps of shrimp paste. This dry, gritty base is the foundation every subsequent aromatic is built into.
From the canon — Kapi — fermented shrimp paste — is the foundational umami ingredient of the Thai kitchen. Shrimp Paste (Kapi): Quality, Brands, and Roasting →
3
Add the galangal and pound steadily, working in a circular motion against the mortar walls until the galangal is fully broken down into fibrous threads and then to paste — pressing the fibres against the curved wall rather than just striking them downward tears them apart far more efficiently. Add the lemongrass in two additions, reducing each to fine paste before adding the next, because lemongrass is stubborn and a large mass will simply bounce rather than break down. Continue until no distinct fibres remain; run your fingers through the paste to check.
4
Add the kaffir lime rind and pound until incorporated and no longer distinguishable as separate pieces — the rind carries bitter, floral oils that need to be fully ruptured and married into the paste rather than left as pockets of raw sharpness. The paste at this stage should be coarse-smooth with a strong citrus-bitter aroma. Taste: if you can still identify individual pieces by texture, keep pounding.
5
Add the shallots and pound to paste, then add the garlic and reduce likewise, so their sharp, raw edge is worked out and they become sweet and cohesive within the mass. The paste will become noticeably wetter as the alliums release their moisture; continue pounding until no raw chunks remain and everything coheres into a single, even body. Resist the temptation to add the chillies before this stage is complete.
6
This is where the dish lives or dies: add the fresh green chillies — spur chillies first, bird's eye second — in small additions, pounding each addition to complete smoothness before introducing the next, because all preceding aromatics must already be at fine-paste consistency; if they are not, the flood of moisture from the chillies will prevent the fibrous elements from ever breaking down properly. The paste should turn a deep, brilliant emerald green as the cells rupture and release their pigment. Do not use a blender at any stage — blending aerates the paste, turning it pale and producing a waterlogged, raw-tasting result that no amount of cooking will fully correct.
7
Add the krapao or horapha leaves and pound briefly until fully broken down and the paste is uniformly fine and deeply coloured — work quickly, because prolonged pounding of fresh herbs at room temperature causes the green to dull and grey as the volatile fragrance dissipates. The finished paste should be brilliant emerald green, almost smooth, cohesive, and intensely fragrant, with no stringy fibres and no separate pools of liquid. Use immediately, or press cling film directly against the surface and refrigerate for up to three days.
From the canon — An extended entry on holy basil (Ocimum tenuiflorum — krapao, bai grapao) and its specific role in the Thai kitchen. Krapao (Holy Basil): Complete Aromatic Profile and Cultural Context →
III
Quality Hierarchy
01
Reserve — All aromatics sourced fresh on the day of pounding; kaffir lime rind from a fresh, unwaxed fruit; kapi of the highest grade, dark and deeply fermented; chillies picked at the immature green stage for maximum colour.
02
Estate — Fresh lemongrass, galangal and kaffir lime rind from a specialist Asian grocer; good-quality kapi; chillies sourced from a Thai greengrocer where prik chee fah and prik kee noo are available separately.
03
Market — Fresh lemongrass and galangal from a general supermarket; kaffir lime rind replaced with a small quantity of dried rind (soaked and squeezed); standard green finger chillies and bird's eye chillies substituted at the same ratio.
04
House — Paste made entirely from supermarket aromatics; dried galangal powder substituted where fresh is unavailable. Colour and fragrance will be noticeably diminished but the structural technique of sequential pounding remains the same.
IV
Sensory Tests
◇Touch. Each aromatic stage is complete when the pestle meets no resistance from fibres and the mass beneath it feels uniformly paste-like, not gritty or stringy.
◇Sight. The finished paste is brilliant emerald green and almost smooth — no visible herb strands, no separation of liquid from solids.
◇Smell. The completed paste carries a layered fragrance: citrus-bitter kaffir lime in front, warm galangal and lemongrass beneath, and the saline depth of kapi at the base — all simultaneously present, none dominating.
◇Where it lives or dies. The fresh chillies must be added only after every preceding aromatic is at fine-paste consistency — if the aromatics are under-pounded at this stage, the chilli moisture will lock them in their fibrous state and no amount of subsequent pounding will recover a smooth paste.
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