A practical, no-spin guide to comparing Indonesia vs China IQF vegetable quotes by normalizing for glaze percentage, drip loss, blanch level, and defect tolerance. Includes a simple usable-yield cost formula, a 10-minute deglaze field test, and sample PO wording to lock glaze tolerances.
If you’ve ever felt like you’re paying for ice, not vegetables, you’re not alone. Over the last year, we’ve helped buyers normalize Indonesia vs China IQF quotes and uncovered 7–15% hidden costs just by correcting for glaze percentage, drip loss, blanch level, and defect tolerance. You don’t need a lab to do this. You just need a consistent method and the right clauses in your PO.
This guide sticks to yield and glaze. We won’t cover freight, tariffs, packaging formats, certifications, or microbiology.
The 3 pillars of apples-to-apples comparison
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Price basis. Are you being quoted per gross weight with glaze or per net weight excluding glaze? Many Chinese offers lean on gross weight pricing with heavier glaze. Many Indonesian exporters, including us, price on net weight and keep glaze moderate. There are exceptions on both sides. Always confirm the basis in writing.
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Real usable yield. Glaze, thaw drip, cooking loss, and defects all change how many edible kilos you get in the pan. If you skip any one of these, your “cheaper” option can turn expensive.
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Inspection method and tolerances. If your PO doesn’t define how to measure glaze and drip or what range you’ll accept at destination, you won’t have leverage when numbers don’t line up.
What is a reasonable glaze percentage for IQF mixed vegetables?
For protective glaze on IQF vegetables, we recommend targeting 6–10% for most cuts. In our experience:
- Mixed vegetables: 6–10%
- Sweet corn kernels: 4–8%
- Bell peppers strips/dice: 4–8%
- Okra whole/sliced: 6–10%
- Broccoli/cauliflower florets: 6–12% depending on floret size and pack time
Heavier glaze can reduce freezer burn during long storage or rough handling, but you’re also shipping and paying for water. If your supply chain is tight and product turns fast, you probably don’t need 15%+ glaze.
Do Chinese IQF suppliers typically use more glaze than Indonesian suppliers?
Often, Chinese quotes arrive on a gross-weight basis with higher glaze targets, especially on commodity lines and when pricing is competitive. We see 12–25% glaze quoted fairly often for mixed veg and broccoli from China when the invoice is gross weight. Indonesian suppliers, especially those serving Japan and regional QSRs, more commonly target 6–10% glaze and sell on net-weight terms.
That said, country is not destiny. Many Chinese plants will meet a tight glaze spec if you ask and enforce it. And some Indonesian packers will default to higher glaze if the buyer doesn’t specify. The fix is simple. Specify the percentage and the method.
The usable-yield cost formula buyers actually use
Here’s the shortest path to an apples-to-apples number. Work in kilos.
- Convert everything to net edible weight.
- If the offer is gross with glaze, Net edible kg = Gross kg × (1 − glaze%).
- If the offer is net weight already, skip this step.
- Apply thaw or cook loss and defects to get usable kilos.
- Usable kg = Net edible kg × (1 − drip loss%) × (1 − defects/trim%).
- Normalize price to cost per usable kilo.
- Cost per usable kg = Delivered carton price ÷ Usable kg.
A quick example:
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Offer A: China, $1.00/kg on gross weight, glaze 20%, expected drip 5%, defects 3%. For a 10 kg carton: Net edible = 10 × 0.80 = 8.0 kg. Usable = 8.0 × 0.95 × 0.97 = 7.384 kg. Cost per usable kg = $10.00 ÷ 7.384 = $1.35.
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Offer B: Indonesia, $1.20/kg on net weight, glaze 8% (for protection only), expected drip 3%, defects 2%. For a 10 kg net carton: Usable = 10 × 0.97 × 0.98 = 9.506 kg. Cost per usable kg = $12.00 ÷ 9.506 = $1.26.
Despite a higher headline price, Offer B is cheaper in the pan. Use this method on every quote. You’ll be surprised how often the ranking flips.
A 10-minute deglaze field test you can run on arrival
You don’t need a lab to verify glaze percentage. You just need consistency.
Equipment: calibrated scale to 1 g, perforated colander or wire basket, timer, water at 18–22°C, absorbent towels.
Method (per sample unit):
- Weigh the still-frozen product without the pack. Record as Wf.
- Place in colander. Rinse under a gentle stream of 18–22°C water while agitating for 60–90 seconds until all surface ice is removed. Avoid warming the product.
- Drain for 30 seconds, then quickly blot excess water from the surface. Weigh. Record as Wd.
- Glaze% = (Wf − Wd) ÷ Wf × 100.
Do three units per lot. Average them. Keep your rinse time, water temperature, and drain time identical every time. If you ever dispute results, matching your buyer’s or plant’s method matters more than picking a “perfect” method.
Tip: If product is heavily glazed, two rinse cycles may be needed. Stop as soon as the surface feels ice-free. Over-rinsing can inflate “glaze removed” and make your supplier look worse than they are.
How glaze level affects real yield and cooking loss
Glaze doesn’t just change price. It changes how the product behaves.
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Freezer burn protection. At 4–8% glaze, color and texture hold well for most veg up to 12 months frozen if the cold chain is stable. At 12–20%, protection improves for long storage or fluctuating temperatures. If your warehouse or distribution has frequent door openings, you may need the higher end.
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Drip loss. Heavier glaze can slightly reduce surface dehydration during storage. But thaw or cook drip depends more on blanch level and cut size than glaze. In our audits, going from 8% to 16% glaze changed drip loss by 0.5–1.0 points at most. Over-blanching or oversized cuts can swing drip by 2–4 points.
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Blanch level. Light to medium blanch tends to keep better bite and often shows 8–12% cook loss on broccoli or beans after reheat. Heavier blanch softens texture and can push cook loss to 10–14%. For corn, peppers, and okra, blanch level affects texture more than weight loss, which typically stays in a 2–6% band depending on preparation.
Bottom line. If a supplier proposes very heavy glaze to “reduce drip,” ask for blanch parameters and a destination test. In our experience, blanch and cut size are the bigger levers.
What should I put in the PO to lock glaze and yield tolerances?
Here’s practical wording that works. Adjust numbers to your needs.
Protective glaze
- Target glaze: 8%. Acceptable range at origin: 6–10%.
- Destination tolerance: up to target +2% absolute on average across n=5 cartons, with no single unit above target +3%.
- Measurement: remove glaze by rinsing under 18–22°C water with agitation for 60–90 seconds, drain 30 seconds, blot, and weigh. Average of three units per carton. Method to be identical at origin and destination.
- Remedy: Overglaze above tolerance will be price-adjusted pro rata based on the overglaze weight at the contracted edible price per kg. Repeated nonconformance may trigger rejection rights for the affected lot.
Drip loss and defects
- Thaw drip loss max: 5% for mixed vegetables, measured after 24 hours at 0–4°C on a mesh rack over tray, no contact with standing water.
- Defects/foreign matter: Define your AQL and what counts as a defect. E.g., max 2% off-grade pieces by weight in mixed vegetables, AQL 2.5.
Blanch and cut
- Define bite/texture target. E.g., green beans bite rating 7–8 on a 10-point line scale after 2 minutes sauté.
- Define cut size. E.g., peppers strips 6–8 mm, corn kernel skin integrity score, okra slice 10–20 mm.
Labeling and net weight
- All labels and invoices to reflect net weight exclusive of protective glaze. Invoice to state both net edible and protective glaze percentage recorded at packing.
Add your sampling plan. For example, n=5 cartons per 20-ton lot. Keep it boring and specific. That’s how disputes get solved in minutes, not weeks.
Are heavier glazes a red flag or smart protection?
Neither by default. Heavier glaze can be a practical choice for long-ship routes or fragile cuts. It becomes a red flag when it’s used to mask weak cold chain or to sell on gross weight at a headline price that looks great on paper but erodes in your kitchen. We recommend setting the glaze target to match your real risk of dehydration and insisting on net-weight invoicing where possible.
What do EU and US markets expect on net weight for glazed IQF?
Both the EU and the US expect net quantity for glazed frozen foods to exclude the protective ice. In other words, the declared net weight is the edible portion only. If you buy on gross weight, that’s a commercial choice, but your label and customs declarations should still reflect net edible weight. Many buyers avoid confusion by contracting and invoicing on net weight, then stating the glaze percentage separately on the spec sheet.
Quick answers to the questions buyers ask us most
- Reasonable glaze for mixed veg: 6–10%. Go higher only if your chain is long and temperature control is shaky.
- Measuring glaze without a lab: use the 10-minute rinse, drain, blot method with controlled water temp and timing.
- How much glaze is too much: if you don’t need the dehydration protection, anything above 12% usually adds cost with little yield benefit.
- Verify at destination: audit three units per carton, five cartons per lot. Share your method with the supplier before shipment.
Where Indonesian product shines and when China can still win
We see Indonesian plants deliver strong bite and moderate glaze on Japanese and QSR-driven specs. Our own Frozen Mixed Vegetables, Premium Frozen Sweet Corn, Frozen Paprika (Bell Peppers) - Red, Yellow, Green & Mixed, and Premium Frozen Okra typically run 6–10% glaze with net-weight invoicing and tight cut-size control.
China still dominates in scale and can be very competitive on price, especially for standard mixes and broccoli. If you lock the glaze, drip, and defect specs and enforce them, you can get excellent value. The trick is to normalize correctly and then hold the line at destination.
Need help drafting your glaze clause or running a quick usable-yield normalization on your current quotes? Reach out and we’ll walk through it with you in 15 minutes. You can Contact us on whatsapp. If you want to compare specs we run in production, feel free to View our products.
Final takeaway. Don’t chase headline price. Normalize to cost per usable kilo, define your glaze measurement and tolerances, and verify at destination. Do those three things and you’ll buy smarter in 2026 whether your cartons come from Surabaya or Shandong.