What Is Onion Powder?

Onion powder is a dry seasoning ingredient made by slicing, drying and finely milling onion (Allium cepa). Fresh onion is about 90% water; after drying the moisture falls below 6% and the product carries an aroma roughly ten times as concentrated as fresh onion. The colour is light yellow-beige and the taste sweet-pungent. It can be produced from white, yellow or red onions; industrial grades favour white and yellow varieties with high dry matter.

How is it produced?

Onions are cleaned, their outer skins removed, sliced and dried in stages in hot-air dryers. The dried slices are first broken (granules) and then milled to the required fineness and sieved. Toasted grades receive a controlled heat treatment at the end of drying that gives a golden-brown colour and caramelised taste. Because onion powder is highly hygroscopic, moisture control from production to packing is critical.

Applications in food manufacturing

It is used in instant soup and powdered sauce mixes, spice and seasoning blends, snack and crisp coatings, processed meat (meatballs, sausages, burger mixes), ready meals, bakery products and dips. It replaces fresh onion in production because it does not raise the water activity of dry mixes and allows repeatable dosing.

Technical properties and quality criteria

Check moisture (typically ≤ 6%), particle size (80–100 mesh), colour (light yellow-beige; dark colour indicates excessive heat), total and acid-insoluble ash, microbiological values (total plate count, Salmonella, E. coli, yeast and mould) and pesticide residues. Some suppliers report pyruvic acid as an indicator of aroma intensity; a higher value means a sharper onion taste.

What to check when buying

Origin (China, India, Egypt) affects colour and aroma profile. Clarify whether an additive-free product or one with a flow agent is required. Because the product absorbs moisture, PE or aluminium inner liners and tight resealing after opening matter. Obtain the specification, lot-specific COA and origin document from the supplier, and assess whether a steam-treated grade is needed based on the cooking conditions of your product.

Wholesale sourcing: price and minimum order

The wholesale price of onion powder is driven by harvest conditions, variety (white/yellow), grind fineness, toasting, packaging and order quantity. The typical minimum order is one pallet (500 kg). PERDIST identifies the grade suited to your application, compares sources and provides a written quotation with documents, then follows the shipment after the order.

Frequently asked questions

When are onion powder and onion granules each preferred?

Onion powder suits soups, sauces and coatings that need uniform flavour and fast dissolution; granules suit bread toppings, meatball mixes and fillings where visible pieces and slow flavour release are wanted.

Why does onion powder cake and how is it prevented?

Its high sugar content absorbs atmospheric moisture quickly. Moisture-proof packaging, cool storage and fast use after opening prevent caking; grades with a flow agent are another option.

What is the shelf life of onion powder?

Typically 18–24 months in unopened packaging, depending on moisture content, packaging type and storage temperature.

Specification summary

The values below come from the Onion Powder page of the PERDIST catalogue and are confirmed per batch with the specification and certificate of analysis on every shipment.

Field	Value
Typical properties	Moisture ≤ 6%, particle size 80–100 mesh, light yellow-beige colour, sweet-pungent onion aroma. Values vary by supplier specification.
Applications	Instant soups and powdered sauces, spice and seasoning blends, snack coatings, processed meat, ready meals and bakery products.
Usage rate	Typically 0.5–2% in the finished product; about 10× more concentrated than fresh onion. Hygroscopic, keep sealed.
Shelf life and storage	Typically 18–24 months in unopened packaging; store dry, cool and odour-free and reseal tightly after opening.
Packaging	Typically 20–25 kg kraft bags or cartons with PE inner liner; pallets of 500–1000 kg. 5–10 kg packs considered on request.
Minimum order	Usually one pallet (500 kg). Smaller quantities for trial production are stated in the quotation depending on product and supplier.
Origin	Common origins: China, India, Egypt. Documented per lot in the quotation.

Documents to request from the supplier

Sieve analysis and particle distribution: grind size against your target.
Aflatoxin, ochratoxin A and dye residue results, with the method used.
Batch certificate of analysis and origin document, showing the number of the batch shipped.

For supplier selection, auditing and the approved supplier list, see the supplier evaluation and approval guide.

Sample and approval steps

The steps from requesting a sample to the application trial and keeping a reference sample are set out in the ingredient sample evaluation and approval guide.

Regulatory and documentation context

Contaminant limits for spices (aflatoxins, ochratoxin A, dye residues) sit under the Turkish Food Codex contaminants regulation, and an export shipment follows the limits of the destination country. Check the certificate of analysis for the method behind each parameter.

What Is Onion Powder?