Frozen cauliflower is graded on two things a buyer can see and one they cannot. The two visible ones are calibre and colour. The invisible one is how tightly the curd was closed at harvest, which decides whether the floret holds together through blanching and freezing or breaks down into rice and fines. A loose, over-mature curd yields a high fines fraction no matter how good the freezing line is, and fines are worth less than florets. This is why cauliflower specifications talk about the fines percentage as well as the calibre band, and why the same plant can deliver two very different lots from two different fields in the same week.
Grades, cuts and calibration
Standard calibre bands are 20 to 40 millimetres and 40 to 60 millimetres, with a 10 per cent by weight tolerance for pieces outside the band as the common commercial figure. Anything under 20 millimetres is sold as fines or is diverted to rice cut, a 5 to 10 millimetre granulate that has grown into a substantial product line of its own for low-carbohydrate applications. Colour is specified as creamy white to pale ivory, assessed against a retained reference. Yellowing and pink or purple flecking are field and cultivar effects, mostly from sun exposure on an unwrapped curd, and they are not corrected by processing. Grey or translucent patches, by contrast, are a process signal: they usually mean an over-run blanch or a slow freeze.
Seasonality and availability
The Ukrainian cauliflower window runs from June into November, with the best curd quality in the cooler weeks at either end of the season. Mid-summer heat produces looser curds and a higher fines fraction, so a lot frozen in August is not interchangeable with a lot frozen in late September even when both meet the same written calibre. Product is supplied from cold store for the rest of the year. Buyers who need a consistent fines percentage across twelve months should say so in the contract and expect the supplier to blend across production dates to hold it.
What the buyer checks at intake
- Core temperature between cartons on at least three pallets, with the reefer download read before any pallet is accepted if a reading is warmer than minus eighteen degrees Celsius.
- Calibre on a weighed sample, with the out-of-band fraction and the fines fraction recorded separately. Fines are the number that moves the value of the lot.
- Colour against a retained reference. Distinguish field discolouration, which is cosmetic and cultivar related, from process discolouration, which points at the blanch or the freezing rate.
- Curd integrity after a controlled thaw on a retained sample. Florets that collapse into rice were over-mature or over-blanched.
- Free-flowing behaviour and free ice in the bag.
- Peroxidase test on the retained sample, cross-checked against the blanch record for the production date.
- Extraneous vegetable matter, principally leaf fragments, against the agreed tolerance.
Where it is used
Food service buys the 20 to 40 millimetre band for gratins, mixed vegetable sides and buffet service, and cares most about a floret that survives reheating without shedding. Retail private label buys the same band in printed bags and cares most about colour uniformity, because yellowing is the single most common consumer complaint in the category. Rice cut goes to chilled and frozen ready meals and to the low-carbohydrate segment, where the specification shifts to granulate size distribution and free moisture rather than to floret calibre. Baby food takes the fines and the smaller band and applies the tightest residue expectations.
Standards and routes
Road reefer through the western Ukrainian crossings into Poland is the default, with onward delivery into Germany, the Netherlands and France. GFSI-recognised certification at the plant, GLOBALG.A.P. at farm level, and EU organic certification where relevant, are the certification set most European buyers ask for before a first trial.
