Spices: Curry Sauce
In the Netherlands, you say curry and you mean that yellow sauce at the snack bar. I used to get worked up about people calling that a "curry sauce." Now I see it differently: the Dutch became such fans of the concept that they created their own version, and that version has since become a classic Dutch product. But there is a world of difference from what an Indian cook means when they say curry sauce. This article covers both: the science, the technique and the HACCP protocol for each.
In brief
Curry sauce is a broad term covering two fundamentally different products: the Dutch snack bar curry sauce (mild, slightly sweet, thickened with starch, tomato-yellow in color) and the Asian-Indian curry sauce (based on freshly chopped spices, aromatics and sometimes coconut milk). Both share turmeric as the dominant pigment. The flavor, texture and preparation, however, are entirely different.
- Curcumin: the yellow pigment in turmeric is curcumin (2-5% of turmeric's dry weight). Curcumin is fat-soluble: it dissolves better in oil than in water, which means it must first be heated in cooking fat for maximum color release into the sauce. This is why the spices are fried before the liquid is added. (McGee, On Food and Cooking, Scribner 2004, p.422)
- Capsaicin and heat levels: the "spicy" in a curry sauce is not a taste but a pain stimulus. Capsaicin activates the TRPV1 heat receptors on the tongue: the body interprets this as warmth. The Scoville scale measures capsaicin concentration. Dutch snack bar curry contains barely any capsaicin (< 1,000 SHU). Indian curry with Kashmiri or Madras powder: 10,000-50,000 SHU. (McGee 2004, p.394)
- Curry powder composition: curry powder is a blend of at least 5 spices. The Codex Alimentarius (CODEX STAN 97-1981) describes the minimum composition: turmeric, coriander, cumin, fenugreek and chili as required base ingredients. Commercial curry powder often also contains celery or celery seed: this is a mandatory declaration allergen (EU Regulation 1169/2011). Always check the allergen profile from your supplier.
- Dutch snack bar curry: the specifically Dutch version (also called "kerrie-saus" at snack bars) typically contains apple puree or apple juice for sweetness, thickened with cornstarch, with a mild curry powder. This is a local innovation with no direct Indian predecessor. The sauce has a pH of 4.2-4.8 due to the fruit component. (Larousse Gastronomique 2009)
- Coconut milk in Asian curry: coconut milk (38-40% fat content) is the rich liquid base of Thai and Malaysian curries. The high fat content causes rapid spoilage after opening: maximum 2 days at max 7°C / 45°F after opening. Never store in the original can after opening: metal migration increases the rate of spoilage. (NVWA Hygiene Code Hospitality 2023; FDA Food Code 2017)
Five curry sauces for the professional kitchen
Dutch Snack Bar Curry
Mild, slightly sweet, thickened with cornstarch. The base is a light tomato sauce with apple puree and mild curry powder. This is the sauce that 60% of Dutch people mean when they say "curry sauce." pH 4.2-4.8 due to the fruit component. Shelf life: 5 days refrigerated.
Examples: French fries, croquettes, fried snacks
Indian Masala Base
Fresh ginger, garlic and onion as the aromatics base (the Indian mirepoix), supplemented with garam masala and tomato puree. Frying the spices in oil ("tempering") is mandatory for maximum curcumin release. Base for murgh makhani, korma and vindaloo. (Jaffrey, Madhur Jaffrey's Indian Cooking, Barron's 1982)
Examples: Chicken, lamb, lentils, chickpeas
Thai Yellow Curry
Coconut cream, yellow curry paste, lemongrass and galangal. Softer and more aromatic than Indian curry due to the essential oils in lemongrass and galangal terpenes. Less heat, more fruitiness. The coconut milk base does not curdle at high heat: always finish on low heat.
Examples: Shrimp, chicken, vegetables, tofu
Japanese Curry (Kare)
Sweeter, thicker and milder than Indian or Thai curry. Base: roux + stock + commercial curry block (roux with spices). Typical additions: potato, carrot, onion and meat. The sweet component is a defining feature: sometimes deliberately added via apples or banana.
Examples: Kare raisu, curry udon, kare pan
Curry a la Creme
French interpretation: dry white wine, shallots, heavy cream and curry powder. Elegant, creamy, suited for fish and shellfish. Escoffier describes a similar "sauce indienne" (recipe #96). The cream softens the heat of the curry powder: a light hand, otherwise it overwhelms.
Examples: Sea bass, halibut, lobster, scallops
Sources: Jaffrey, Madhur Jaffrey's Indian Cooking (1982); CIA Professional Chef 9th edition (2011); Larousse Gastronomique (2009); Codex Alimentarius CODEX STAN 97-1981
Three techniques for a deeper curry profile
Balancing heat without diluting
Gotten too spicy? Add coconut milk or a splash of heavy cream. Do not add water: that dilutes flavor; cream and coconut milk enrich. A pinch of sugar also helps: sweetness and fat together measurably reduce capsaicin perception.
Applicable to any over-spiced curry variant
Day-old curry: better than fresh
Curry tastes better the second day. The spices continue to infuse the sauce after cooling and reheating. This is a real phenomenon caused by ongoing flavor exchange at lower temperatures. Always plan production a day ahead for maximum flavor depth.
Recommended for: all curry sauces
Crispy fried onions as garnish
Deeply fried (crispy) onions add a crunchy texture and concentrated sweetness to a curry sauce. Cut onions into thin rings, deep-fry at 180°C / 356°F until golden brown, drain on paper towels. 2 tablespoons per portion as garnish elevates a curry sauce from classic to premium.
Indian, Pakistani and Middle Eastern curries
Step by step: curry sauce from scratch
-
1
Temper dry spices in hot oil
Heat neutral oil (2 tbsp) in a heavy pan over medium-high heat. Add whole cumin seeds and wait until they crackle (20-30 seconds). Then add curry powder (1.5 tbsp per person), turmeric (0.5 tsp) and optionally chili flakes. Fry the spices for 60-90 seconds in the hot oil before any liquid is added. This is tempering: the fat-soluble curcumin dissolves in the oil and then distributes color evenly throughout the sauce.
Spices that go directly into water or cream are underperforming: curcumin and most aroma compounds are fat-soluble. Without the oil step, up to 60% of color and aroma is lost. -
2
Saute aromatics: onion, ginger, garlic
Add finely chopped onion (1 large) and cook for 10-12 minutes over medium-high heat until golden brown. Then add grated ginger (2cm piece) and chopped garlic (3 cloves). Cook for 2-3 minutes. This trinity is the Indian equivalent of the French mirepoix: the flavor foundation of the entire sauce.
Take your time with the onion. Undercooked onion gives a harsh, sharp base. Properly caramelized onion gives a sweet, rich foundation. -
3
Add tomato and liquid
Add chopped tomatoes (2 pieces or 200ml pureed canned tomato). Cook on high heat for 5 minutes until the tomato breaks down and most of the water has evaporated. Then add stock or coconut milk (300ml). Stir everything well.
Coconut milk after opening: maximum 2 days at max 7°C / 45°F in a sealed container (not the can). Metal migration from open cans noticeably accelerates spoilage. (NVWA Hygiene Code Hospitality 2023; FDA Food Code 2017, §3-202.15) -
4
Reduce and build flavor
Let the sauce simmer for 15-20 minutes on low heat without a lid. Stir regularly. The sauce concentrates and the individual spice flavors integrate into a whole. Taste after 15 minutes: too spicy means add more coconut milk or a splash of cream. Too flat means more salt or lemon juice.
A curry sauce that tastes "done" right after tempering is not actually done. The flavor only fully integrates after 15+ minutes of simmering. -
5
Season, cool and label
Adjust seasoning with salt, lemon juice and optionally a pinch of sugar. Cool immediately after preparation. Store in a tightly sealed container.
Curry powder may contain celery (flavoring) and mustard seed: both mandatory declarations under EU Regulation 1169/2011. In the US, these may fall under FALCPA or state-level requirements. Check the allergen sheet from your curry powder supplier and declare on the menu. Label: contents + use-by + chef name. (NVWA Hygiene Code Hospitality 2023; FDA Food Code 2017)
HACCP: Coconut Milk, Spices and Allergen Declaration
Curry sauce has two HACCP focus areas: (1) coconut milk base spoils quickly after opening due to the high fat content, (2) curry powder typically contains multiple mandatory declaration allergens whose composition varies by brand. Allergen information must be declared for every dish.
Allergen declaration curry powder: varies by brand
Curry powder contains variable ingredients per brand and production run. Common mandatory declaration allergens in curry powder: celery (flavoring) (EU mandatory), mustard seed (EU mandatory). Some cheaper blends also contain wheat starch as a filler (gluten).
Practical approach: request an up-to-date allergen sheet from your spice supplier with every new delivery. Verify when switching brands. Declare all present allergens on your menu per EU Regulation 1169/2011. In the US, check FALCPA requirements and state-level regulations for additional allergen declarations.
Source: EU Regulation (EU) No. 1169/2011, Annex II; Codex Alimentarius CODEX STAN 97-1981 (Curry Powder); NVWA Hygiene Code Hospitality (2023); FDA FALCPA (2004)
Coconut milk: 2 days after opening, never store in the can
Coconut milk (38-40% fat) is an excellent growth medium for bacteria and mold after opening. Maximum shelf life after opening: 2 days at max 7°C / 45°F in a tightly sealed plastic or glass container. Never store in the opened can: metal ions from the can migrate into the contents and accelerate spoilage.
Source: NVWA Hygiene Code Hospitality (2023), section Canned goods and packaging; FDA Food Code 2017, §3-202.15
HACCP reference table: curry sauce storage and allergens
| Product | Risk | Storage temp | Max shelf life | Allergen |
|---|---|---|---|---|
| Curry sauce with coconut milk | Bacteria, mold (high fat) | < 7 °C | 2 days | Curry powder (celery, mustard) |
| Curry sauce without coconut milk | Bacteria (moderate) | < 7 °C | 4 days | Curry powder (celery, mustard) |
| Coconut milk (unopened can) | Low | Cool & dry | See label | No EU/FDA major allergen |
| Coconut milk (opened) | High after day 2 | < 7 °C | 2 days | Do not store in can |
Dutch snack bar curry vs Indian masala
| Aspect | Dutch snack bar curry | Indian masala base |
|---|---|---|
| Base | Tomato puree + apple puree | Fresh aromatics + spices |
| Thickener | Cornstarch or flour | Reduction of tomato and onion |
| Heat level | Barely any (< 1,000 SHU) | 5,000-50,000 SHU (depending on powder) |
| Shelf life | 5 days at < 7°C | 3-4 days at < 7°C |
| Food cost per liter | $0.70-$1.05 | $1.40-$2.10 |
In the Netherlands we are accustomed to that sweet yellow curry sauce with our fries. And there is nothing wrong with that. But if you ask an Indian cook what curry sauce is, he looks at you as if you asked him what "a little sauce" means. That is how broad the concept is.
Jeffrey Smit, former kitchen manager
Food cost: curry sauce two ways
- Dutch snack bar curry (1 liter): tomato puree 200ml ($0.26) + apple juice 100ml ($0.10) + curry powder 15g ($0.18) + cornstarch 20g ($0.05) + onion, garlic ($0.12) = approximately $0.71-$0.90 per liter. Ideal for large volumes under tight margin pressure.
- Indian masala base (1 liter): fresh ginger + garlic + onion ($0.55) + fresh tomatoes or puree ($0.40) + garam masala + turmeric ($0.30) + optionally coconut milk 200ml ($0.55) = approximately $1.40-$2.10 per liter. Higher food cost, but justifies a higher menu price.
- Portion size: 60-80ml per portion as sauce with a main course. At 70ml and $1.75 cost per liter = 12.3 cents per portion. Considerably lower than the 40-60 cents for a ready-made Indian curry sauce.
- The difference in selling price justifies the difference in food cost. A homemade Indian curry sauce noticeably increases the perceived value of a dish. Run the test: put "house-made masala" on the menu versus "curry sauce." The selling price guests will accept rises by $2-$3 per dish.
Frequently asked questions: curry sauce in the professional kitchen
Why does my curry sauce taste bitter?
Two most common causes: (1) spices fried too long in oil that was too hot: above 180°C / 356°F curcumin burns and produces bitterness, (2) too much fenugreek in the curry powder, which after excessive heating gives a herbal-bitter note.
Solution: add a pinch of sugar, or coconut milk. For the next batch, start frying spices at medium-high heat (maximum 150-160°C / 300-320°F oil) and keep frying time under 90 seconds. (CIA Professional Chef 2011, Ch.11)
How long does homemade curry sauce keep?
With coconut milk base: maximum 2 days at max 7°C / 45°F. Without coconut milk: 4-5 days. Day-old curry tastes better: the spices continue to infuse. Always reheat to a minimum of 75°C / 167°F core temperature before serving.
Freezing works excellently: up to 3 months at -18°C / 0°F. After thawing in the refrigerator: use within 2 days. (NVWA Hygiene Code Hospitality 2023; FDA Food Code 2017)
Which allergens does curry powder contain?
This varies by brand and production. Common allergens: celery (flavoring) and mustard seed are EU mandatory declarations (Regulation 1169/2011 Annex II). Cheaper blends sometimes contain wheat starch (gluten). Request an up-to-date allergen sheet from your supplier with every delivery and verify when switching brands.
Can I replace curry powder with fresh curry paste?
Yes, with a better flavor outcome. Fresh curry paste (fresh chili, ginger, garlic, lemongrass, galangal, turmeric) delivers a fresher, more complex flavor than dry curry powder. Downside: more preparation time and higher food cost.
Practical compromise: use dry curry powder as the flavor base and add fresh ginger and garlic as aromatics. This delivers 80% of the freshness improvement for 30% of the extra effort.
Why does coconut milk go grainy in my curry sauce?
Coconut milk separates at excessively high heat or sudden temperature changes: the fat and water split. This is reversible by vigorous stirring, but visually undesirable during service.
Prevention: always add coconut milk to a sauce that is already off the heat or on low heat. Never pour boiling coconut milk directly into an overly hot sauce. And: never bring to a boil after adding coconut cream; cream separates faster than regular coconut milk. (McGee 2004, p.482)
Dutch snack bar curry vs Indian curry: which do I choose for my menu?
That depends on the concept. Dutch snack bar curry: fast, cheap, consistent, high volume. Perfect for snacks and lunch menus. Indian masala: a deliberate choice, higher food cost but justifies a higher selling price, stronger identity on the menu.
Combine both in a concept that allows it: snack bar curry for the quick-service menu, masala base for the main menu. They address different occasion types without competing.
Legal information & disclaimer — click to read
Informational disclaimer
The information on this page is intended solely for educational and informational purposes for hospitality professionals. KitchenNmbrs B.V. strives for accuracy and timeliness but cannot guarantee that all information is fully correct, complete or up-to-date at all times. Culinary techniques, scientific insights and food safety guidelines may change.
Professional responsibility
Applying the techniques described requires professional expertise and training. KitchenNmbrs is not liable for damage, injury, illness or loss resulting from the application of information from this website without adequate professional guidance or verification. Every kitchen, every product and every environment is different: always apply your own professional judgement.
Food safety & HACCP
The HACCP guidelines, temperatures and storage advice on this page are based on Codex Alimentarius (WHO/FAO) as the global baseline standard and EU Regulation 852/2004. Local laws and regulations may differ. Always consult your national food safety authority for the applicable standards in your region:
- Netherlands: NVWA (nvwa.nl)
- Belgium: FAVV (favv-afsca.be)
- Germany: BfR (bfr.bund.de)
- United Kingdom: FSA (food.gov.uk)
- United States: FDA (fda.gov) — FDA Food Code
- EU general: EU Regulation (EC) 852/2004 on food hygiene
- International: Codex Alimentarius CAC/RCP 1-1969 (revised 2020)
Allergens & dietary information
Allergen information is indicative. When in doubt about allergens in preparations, always contact the supplier or a certified allergological adviser. KitchenNmbrs accepts no liability for allergic reactions or diet-related harm.
Copyright & sources
All sources mentioned (Escoffier, McGee, CIA Professional Chef, etc.) are the property of their respective publishers and authors. KitchenNmbrs cites these works in accordance with fair use for informational purposes. The source attribution at the bottom of each sauce page is not a complete bibliography but an indication of primary sources consulted.
Limitation of liability
To the extent permitted by law, KitchenNmbrs B.V. disclaims all liability for direct or indirect damage arising from the use of information on this page. This includes but is not limited to: financial damage from incorrect cost price calculations, damage from food safety incidents, and damage from technical errors or unavailability of the website. The information on this page does not replace professional culinary advice or legal advice.
Calculate the exact food cost of your curry sauce and all other preparations
KitchenNmbrs automatically calculates the cost per portion, including labor costs and waste.
7 days free. No credit card required. Start free trial →Sources and legal information
- Jaffrey, Madhur. Madhur Jaffrey's Indian Cooking. Barron's Educational Series, New York, 1982. Primary reference for Indian curry techniques and masala preparations.
- McGee, Harold. On Food and Cooking: The Science and Lore of the Kitchen. Scribner, New York, 2004. pp.394-395 (capsaicin, TRPV1), pp.422-423 (curcumin, fat-soluble pigments). Scientific reference.
- The Culinary Institute of America (CIA). The Professional Chef, 9th edition. Wiley, Hoboken, 2011. Chapter 11: Stocks and Sauces. Professional kitchen standard.
- NVWA. Hygiene Code for the Hospitality Industry, 2023 edition. nvwa.nl. Section: Cooling, coconut milk, allergen information.
- Larousse Gastronomique. Editions Larousse, Paris, 2009. p.392 (Curry Sauce, Sauce Indienne). Culinary encyclopedia.
- Codex Alimentarius Commission. Standard for Curry Powder, CODEX STAN 97-1981. FAO/WHO, Rome, 1981. International standard for curry powder composition.
- EU Regulation (EU) No. 1169/2011, Annex II. Mandatory declaration allergens including celery and mustard. European legal framework.
- FDA Food Code 2017. Storage and allergen requirements. US regulatory framework.
HACCP guidelines are based on NVWA Hygiene Code Hospitality (2023), EU Regulation 852/2004 and FDA Food Code 2017. Allergen information is legally required under EU Regulation (EU) No. 1169/2011 and FDA FALCPA (2004). Local regulations may vary.
