Buyer's Guide to Bulk Curry Powder: Grades, Specifications and Packing

Curry powder is a ground spice blend built on coriander, turmeric, cumin, chilli and fenugreek, sold in bulk to food manufacturers, distributors and repackers. Unlike single spices, it has no international grade standard, so the buyer's specification sheet defines the product. This guide sets out the grades, the parameters worth fixing, the treatment options and the packing formats a sourcing manager settles before a container order.

What is curry powder in bulk trade terms?

Curry powder is a blended, ground seasoning with no single legal definition; each supplier's formula is proprietary, so the buyer must specify the result rather than the recipe. A typical blend contains 20 to 40 percent coriander, 10 to 25 percent turmeric, 5 to 15 percent cumin, 3 to 15 percent chilli and 2 to 8 percent fenugreek, with smaller fractions of black pepper, mustard, fennel, ginger, garlic, curry leaf and cinnamon. Styles are named by heat and colour: mild (low chilli, high turmeric), medium, hot (often called Madras style in Western markets) and dark or roasted blends where coriander and cumin are dry roasted before grinding.

Salt is a separate decision. Retail-style blends may carry 5 to 15 percent salt; manufacturers usually buy salt-free to control sodium in their own formulation. Fix the salt basis in writing, because a salt-free blend costs more per kilogram and takes up moisture differently.

How is bulk curry powder graded?

There is no Codex or national grade table for curry powder; trade grades are set by the share of high-value spices, the absence of fillers and the cleanliness of the raw material. Three tiers appear on quotations.

• Standard or economy grade: higher share of coriander and turmeric, lower cumin and chilli, may include permitted fillers such as rice flour or gram flour at 5 to 10 percent, and is often salted. Used by repackers serving price-driven retail.
• Premium or export grade: no fillers, declared spice-only composition, raw spices cleaned to below 0.5 percent extraneous matter before grinding, treated to a microbial specification. Used by branded packers and manufacturers.
• Custom or private-label grade: formulated to the buyer's target profile with fixed tolerances on colour, heat, salt and particle size, against a signed reference sample.

Filler is where generic articles fall short. Starch fillers cut cost and improve flow but dilute colour and flavour and trigger an allergen review if wheat-based. Ask for a declared spice-only statement and check it against ash and crude fibre values, which drop measurably when starch is added.

What specifications should a buyer fix before ordering?

Fix moisture, ash, acid-insoluble ash, volatile oil, curcumin, particle size, salt, microbiology and a colour reference, then hold the supplier to a signed pre-shipment sample. The table gives ranges seen in trade specifications; exact values vary by grade, season of the raw spices and destination market rules.

Parameter	Typical range or limit	Note
Moisture	8 to 10 percent max	Above 10 percent, caking and mould risk rise in tropical transit
Total ash	6 to 10 percent	Higher with salt; state salt-free or salted basis
Acid-insoluble ash	1.0 to 1.5 percent max	Proxy for sand and grit from poorly cleaned raw spice
Volatile oil	0.5 to 1.5 mL per 100 g	Falls with fine grinding, heat and storage age
Curcumin (turmeric fraction)	0.5 to 1.5 percent	Drives yellow colour; declines under light and heat
Particle size	30 to 40 mesh, 425 to 600 micron	Coarser 20 to 30 mesh for some sauce lines
Salt	Nil, or 5 to 15 percent declared	Salt-free preferred by manufacturers
Total plate count	10^5 CFU/g max (treated)	EU and US buyers often require 10^4
Salmonella	Absent in 25 g	Required in every market
Aflatoxin B1 / total	5 / 10 to 20 ppb	Limit depends on destination; EU is stricter

Colour cannot be specified in words. Agree a reference sample and, where the buyer has the equipment, a Hunter L a b or ASTA colour value with a tolerance of plus or minus 5 to 10 percent. Heat is occasionally specified in Scoville Heat Units, but SHU measures the chilli fraction, not the finished blend, and any SHU or capsaicin figure should be tied to a stated test method before it enters a contract.

How is particle size specified?

Most bulk curry powder is ground to pass a 30 to 40 mesh sieve, roughly 425 to 600 micron, with 95 to 98 percent through the stated screen. Finer grinds at 60 mesh and below give smoother sauces and faster dispersion but lose volatile oil sooner and cake more readily in humid storage. Coarser grinds at 20 to 30 mesh, 600 to 850 micron, suit sauce and marinade producers who want visible spice particles.

Ask about the mill. Hammer mills generate heat; product temperatures during grinding commonly reach 50 to 60 degrees Celsius unless chilled-air or cryogenic grinding is used, and that heat load is a main reason two blends of identical composition smell different. Record the grinding method on the specification sheet and treat any temperature figure as descriptive unless a measurement point is defined.

What microbial treatment should bulk curry powder have?

Untreated ground spice blends routinely carry total plate counts above 10^6 CFU per gram, so nearly every manufacturer and most distributors specify a treatment step. Three routes are used. Steam treatment, applied to whole spices before grinding or to the finished powder, reduces counts by 3 to 5 log cycles and is accepted in all major markets, but it adds a heat load that lowers volatile oil and can dull turmeric colour. Ethylene oxide fumigation is effective and heat-free but is prohibited in the EU and restricted elsewhere; check the destination before accepting it. Irradiation is heat-free and effective but requires labelling in most markets and is rejected by many retail brands.

If a steam-treated lot fails a microbial retest it can be steamed again, but the second pass adds a second heat load and further colour and aroma loss, so a limit on the number of steam passes belongs in the specification. Always require a certificate of analysis for the specific lot, not a typical analysis.

How is bulk curry powder packed for export?

Standard export packing is 20 kg or 25 kg in a multiwall paper or woven polypropylene outer bag with a sealed food-grade polyethylene inner liner. Cartons of 4 x 5 kg or 10 x 1 kg pouches serve distributors supplying food service. Larger users take 500 kg or 1,000 kg lined bulk bags. Nitrogen flushing of the liner extends shelf life for blends with high volatile oil.

Shelf life is normally declared as 18 to 24 months from manufacture at below 25 degrees Celsius and 60 percent relative humidity in the original sealed pack; expect colour fade of 10 to 20 percent over that period even in good storage. A 20-foot container carries roughly 9 to 12 tonnes of bagged powder depending on bag density and palletisation; palletised loads reduce bag damage. Buyers who add their own garlic or souring notes at the plant often buy dehydrated garlic flakes or amchoor powder separately so the base blend stays stable in storage.

What documents accompany a bulk curry powder shipment?

The standard set is a commercial invoice, packing list, bill of lading, lot certificate of analysis, certificate of origin and copies of the facility's food safety certificates. ODOD supplies against US FDA registration, ISO, Halal, HACCP and GMP, with certificates provided with each quotation. A Halal certificate is essential for Gulf and Southeast Asian buyers. An allergen statement matters because blends may contain mustard, and any filler must be declared for gluten. A phytosanitary certificate is seldom required for ground, processed spice blends; request one only where the destination authority specifically demands it, because asking by default adds cost and time. Origin is stated on the quotation and shipping documents.

What do experienced buyers check that first-time buyers miss?

They compare the pre-shipment sample and the arrival sample under the same light and at the same age, because colour and aroma drift is real and a claim of not matching the sample fails when the sample was three months fresher. They ask for the sieve analysis of the lot, not the standard figure. They confirm the salt basis on every reorder. They set a tolerance for each parameter instead of a single value. And they treat a regional roasted blend such as Andhra Chicken Masala as a different product from a general-purpose curry powder rather than a substitute.

ODOD LLC supplies bulk curry powder in standard, premium and custom grades from certified partner facilities, in 20 kg and 25 kg bags or bulk bags, by FCL or LCL on FOB, CIF, CFR or DDP terms, with a typical MOQ from 500 kg to one container. Prices depend on grade, quantity and destination. To receive a specification sheet, lot certificate of analysis and certificates, request a quotation.