Malting barley is barley good enough to germinate evenly in a maltings. Maltsters buy it on germination energy, protein and plumpness, and on approved varieties. A lot that fails germination is sold as feed barley at a discount, so the contract must define the test, the timing and what happens if the result misses.
At a glance
- Raw material: mostly spring two-row varieties approved by maltsters
- Key numbers: germination energy, germinative capacity, protein, screenings
- Protein in a narrow band; too high lowers extract
- Rejected lots go to feed: feed barley
- Deep dive: malting barley specification
Grades, cuts and calibration
Germination energy measures how many grains germinate in a set time; germinative capacity measures viability. Maltsters commonly contract germination energy of 95 per cent or more and protein in a narrow band (trade conventions, not law). Plumpness is the share of grains above a 2.5 mm screen.
Variety matters: maltsters buy approved varieties with known malting behaviour, and varietal purity may be checked.
Grades are not set by law: each maltster publishes or negotiates its own intake specification, and lots outside it are either discounted or refused. The usual reference points are germination, protein, screenings, moisture and varietal purity.
Seasonality and availability
Freshly harvested barley can be dormant and germinate poorly for some weeks; maltsters plan intake accordingly. Spring malting barley is harvested in July and August. Maltsters often wait for dormancy to break before steeping new-crop lots, so the first intake weeks after harvest are planned with care.
What the buyer checks at intake
- Germination energy and capacity by the EBC method named in the contract.
- Protein on dry matter and moisture.
- Screenings and plumpness.
- Pre-germinated, skinned and broken kernels.
- DON and other contracted toxins.
Where it is used
Malting for brewing and distilling, and malt extracts for food.
How maltsters judge a lot
A maltster buys extract and process reliability. Germination energy shows whether the grain will sprout evenly in the steep; germinative capacity shows whether it is alive at all, including dormant kernels. Protein in a narrow band protects extract, and plumpness on the 2.5 mm sieve with low screenings below 2.2 mm keeps the malt yield up. Pre-germinated, skinned and broken kernels lower the value of a lot even when the averages look good.
Variety matters because maltsters and brewers approve varieties for their process. Contracts name accepted varieties and ask for varietal purity, sometimes checked by DNA.
Standards and routes
Bulk vessel or truck; storage must stay cool and dry to protect germination.
Testing, storage and the feed outlet
Methods follow Analytica-EBC, the method collection of the European Brewery Convention (an industry reference, not law). See what germination energy means and the germination energy entry for how the 4 ml and 8 ml tests also reveal water sensitivity.
Freshly harvested barley is often dormant and germinates poorly for some weeks; maltsters plan intake around that. Storage must keep the grain alive: dry it gently at low temperature, keep it cool and aerated, and monitor for insects and heating.
DON and other Fusarium toxins are tested on every lot; Fusarium infection is also linked to gushing in beer, so brewers watch it closely.
Lots that fail on germination or protein are sold as feed barley, which is why the contract should state what happens to a rejected lot. The broader barley entry covers the crop itself.
Common specification mistakes
- No named germination method or test timing
- Ignoring dormancy after harvest
- Mixing varieties in one lot
How to brief a supplier
- State approved varieties
- Give germination, protein and plumpness bands
- Name the EBC methods
- Define the rejection or downgrading route
- State storage conditions before shipment