By Smiler Food
Blueberries freeze well, but a carton of IQF blueberries can still hide problems that only show up in the finished product: berries that bleed colour into yoghurt, a size spread that bakes unevenly, or crushed fruit settled at the bottom of the bag. Buyers who source IQF blueberries from China check the fruit against their own recipe, not against a photograph.
Size first: diameter and the undersized share
IQF blueberry is supplied as whole berries in a proposed 10–22 mm grade, with the cultivar and the grading tolerance agreed against the sample. Size matters because it decides how the fruit behaves in a filling or a fruit preparation: a wide size spread means small berries soften first while large ones stay firm, so the texture of the finished product becomes uneven.
Ask the supplier to state the berry diameter range and the acceptable proportion of undersized fruit in the specification, and confirm both against the approved sample.
Colour, bloom and colour migration
Good IQF blueberries are deep blue with a pale natural bloom, the waxy coating that gives the fruit its dusty look. That bloom is not a defect, but dull, grey or reddish berries can point to overripe fruit or poor handling before freezing, so check colour across the whole carton rather than only at the top.
Colour should be tested in the finished recipe, not in the frozen carton alone. Blueberries can bleed colour into yoghurt, ice cream and batters during mixing or heating, so compare colour migration, flavour and texture under the actual processing conditions of your recipe.
Free-flow, ice and crushed fruit
Well-frozen IQF blueberries should pour freely from the pack as separate berries, with no large frozen clumps and no sheet of ice. Clumping can point to temperature abuse during storage or transport, so check that the packs arrive solidly frozen and that the cold chain has been kept unbroken.
Crushed and split berries are the other thing to look for. A small share of broken fruit is normal in handling, but a carton with many crushed berries will leak juice and lose its whole-fruit appearance in bakery fillings. Agree an acceptance limit for broken fruit in the specification, and check the bottom of the pack, where damaged berries tend to settle.
Stalks, leaves and foreign material
Stalks, leaves and other plant material should be removed before freezing, and the specification should state the acceptance limits for them. Tip a sample onto a light tray and sort it by hand: stems and leaves are easy to spot this way, and the count gives you a simple, repeatable check for every delivery.
Packing, order size and cold chain
Packing is offered in 10 kg cartons, with the inner pack and carton confirmed in the quotation. An indicative minimum order of 10 metric tonnes applies as a reference; the quotation confirms the production and dispatch schedule for your quantity. Tell the supplier the net weight per inner pack, packs per carton, estimated order quantity and destination country or port, and include pallet, label and delivery-window requirements where relevant.
Keep the product frozen through storage and transport, and follow the temperature and shelf-life instructions on the agreed specification. The same checks apply to the other frozen berries buyers often order alongside blueberries. IQF raspberry is a common choice for mixed-berry lines, IQF blackberry adds colour and tartness to fruit preparations, and IQF strawberry suits bakery fillings and dairy desserts.
To request a sample or a quotation for IQF blueberries, contact Smiler Food at [email protected] or on WhatsApp at +86 155 8883 1399.
