Grain size makes cleaning the whole problem

Finger millet seed is roughly one to one and a half millimetres across — the smallest of the commonly traded millets. That single fact drives most of what can go wrong.

Sand and fine grit picked up during threshing and yard drying are the same size as the grain itself. Conventional sieving separates particles by diameter, so it cannot remove a contaminant that has the same diameter as the product. Cleaning has to work on density and appearance instead: destoning, gravity separation and optical sorting.

Do not ask a supplier whether the material is clean — every supplier says yes. Ask which cleaning steps are actually on the line, and in what order. A destoner and a gravity separator followed by optical sorting is a different proposition from a vibrating screen, and in finger millet that difference is the whole quality question. Grit is the most common cause of rejection and of complaints from a downstream miller.

The ash figure that looks like a credential

This is the most useful thing on this page, and almost no sourcing page says it.

Finger millet is genuinely the richest common cereal in calcium, which is exactly why it sells into infant food, health food and fortified blend applications. Buyers therefore look favourably on mineral content.

But total ash measures all mineral residue, including silica from soil. A lot carrying grit can return a higher total ash figure precisely because it is dirtier. Read as a nutrition signal, a high ash number can point you toward the worse lot.

Specify total ash and acid insoluble ash as separate contract lines. Acid insoluble ash is the soil and sand indicator, and it is the number that tells you how well the lot was cleaned. If you are making a calcium claim on pack, specify calcium by assay rather than inferring it from ash — they are not the same measurement and only one of them supports a label.

White or brown: a real decision

Brown ragi produces a distinctly dark flour. That is expected in traditional applications, but it can be unacceptable in a pale biscuit, a light blend or an infant cereal where the customer expects a neutral colour. If finished-product colour matters, say so at the enquiry stage and specify colour against a retained reference sample. Ordering brown ragi and hoping for a pale flour is a mistake that only shows up after production.

Product forms

Flour travels better than you might expect

If you know pearl millet, you will know that bajra flour goes rancid within weeks because the grain carries roughly five percent fat. Finger millet is low in fat, around one percent, so ragi flour keeps far better. That makes flour, sprouted flour and ragi-based blends practical export products in their own right rather than things best milled at destination — a genuine commercial difference between the two millets. Still specify the milling date, packaging and an agreed shelf life in writing.

Gluten-free: a claim about the factory, not the crop

Finger millet is naturally gluten free, and that is the basis of much of its demand in the United States, the United Kingdom, Canada and the European Union. But a gluten-free claim on pack is a claim about handling as much as botany.

If the mill or packing line also handles wheat, barley or rye, then segregation and validated cleaning determine whether the claim survives scrutiny. Specify gluten testing against the threshold applicable in your market, ask directly whether the facility is segregated or certified gluten free, and require the test result on the shipped lot rather than a general assurance from the supplier.

Reference specification

Origin, season and organic

Karnataka is by a wide margin India’s largest finger millet producer, with Tamil Nadu, Uttarakhand, Maharashtra, Andhra Pradesh, Odisha and Jharkhand also significant. It is largely a kharif crop, sown with the monsoon from June and harvested from October into December.

Organic finger millet is a real and growing segment — organic Himalayan ragi from Uttarakhand has been exported to Europe with APEDA support, and NPOP certification aligned to EU and US organic rules is available from the Indian supply base. If you are buying organic, require the scope certificate and the lot-level transaction certificate, not just a claim.

Documentation

• Importer Exporter Code from DGFT; APEDA registration; FSSAI licence; facility certifications for milled and sprouted products
• Certificate of analysis: purity, moisture, foreign matter, total ash and acid insoluble ash as separate lines, other grains, damaged, colour reference, with methods and test date
• Gluten test result on the shipped lot where a gluten-free claim is made, with the facility’s segregation status stated
• Calcium assay where a nutrition claim is made
• Aflatoxin report with the sampling plan stated; pesticide residue and heavy metals reports against destination limits
• Microbiological report for flour, sprouted flour and ready-to-eat forms, including Salmonella in 25 g
• Phytosanitary certificate; fumigation certificate stating method, dosage and exposure
• Organic scope and lot-level transaction certificates where organic is contracted
• Certificate of origin; preferential origin documents where applicable
• Commercial invoice, packing list and bill of lading declaring HS 1008.29 — confirm the eight-digit national sub-heading with your broker

Packing and loading

How to qualify an Indian finger millet supplier

1. Ask which cleaning steps are on the line — destoner, gravity separator, optical sorter — before discussing price.
2. Ask for total ash and acid insoluble ash from a recent lot, as two separate figures.
3. State brown or white, and request a retained colour sample if finished colour matters.
4. For a gluten-free claim, ask about facility segregation and require lot-level gluten testing.
5. For a calcium claim, require a calcium assay rather than an ash figure.
6. Establish whether the counterparty cleans and mills in-house or buys packed material.
7. Run a trial quantity and test acid insoluble ash independently before committing to volume.

Frequently asked questions

Why is grit such a problem in ragi?

The grain is about one to one and a half millimetres, the same size as the sand picked up in threshing, so sieving cannot separate them. Cleaning depends on destoning, gravity separation and optical sorting.

Does high ash mean high calcium?

No. Total ash includes soil silica, so a dirtier lot can show higher ash. Specify total ash and acid insoluble ash separately, and specify calcium by assay if you are making a claim.

Brown or white ragi?

Brown is the dominant commercial type and gives dark flour. White is scarcer and dearer, used where the finished product needs a pale colour. Specify at enquiry stage.

Does ragi flour keep?

Far better than bajra flour. Finger millet carries around one percent fat against roughly five percent in pearl millet, so rancidity is much less of a constraint. Still specify milling date and agreed shelf life.

Can I sell it as gluten-free?

It is naturally gluten free, but the claim depends on the facility. Ask about segregation from wheat, barley and rye, and require lot-level gluten testing to your market’s threshold.

How much loads into a container?

Around 25 to 27 MT in a 20-foot container; it is a dense small grain and weight limited.

What is the HS code?

HS 1008.29 for millet other than seed. Confirm the eight-digit national sub-heading with your broker.

• The grain is about one to one and a half millimetres, the same size as the sand picked up in threshing, so sieving cannot separate them. Cleaning depends on destoning, gravity separation and optical sorting.
• No. Total ash includes soil silica, so a dirtier lot can show higher ash. Specify total ash and acid insoluble ash separately, and specify calcium by assay if you are making a claim.
• Brown is the dominant commercial type and gives dark flour. White is scarcer and dearer, used where the finished product needs a pale colour. Specify at enquiry stage.
• Far better than bajra flour. Finger millet carries around one percent fat against roughly five percent in pearl millet, so rancidity is much less of a constraint. Still specify milling date and agreed shelf life.

Do not ask a supplier whether the material is clean — every supplier says yes. Ask which cleaning steps are actually on the line, and in what order. A destoner and a gravity separator followed by optical sorting is a different proposition from a vibrating screen, and in finger millet that difference is the whole quality question. Grit is the most common cause of rejection and of complaints from a downstream miller.