Alan Pham | Vietnam Seafood Sourcing Insights A sourcing consultant's notes on Vietnam's seafood market
Most buyers who purchase frozen surimi know the grade on the spec sheet — SA, A, B — but fewer know the fish behind it. When a supplier says “Itoyori surimi,” procurement teams often accept the label without understanding what separates this species from Alaska pollock or other tropical alternatives. That gap surfaces at quality sign-off, sometimes too late.
This article covers the basics: what Itoyori is, why it became the primary raw material for Asian-style surimi, how the processing chain works, and what to verify before committing to a purchase order.
The Fish: Nemipterus virgatus
Itoyori is the Japanese trade name for threadfin bream — a group of small tropical demersal fish in the family Nemipteridae. The most commercially important species for surimi is Nemipterus virgatus, with related species (N. japonicus, N. bathybius) also processed depending on the fishing ground and season.
Characteristics relevant to surimi buyers:
- White, lean flesh — low myoglobin content means naturally pale surimi without heavy bleaching
- High gel-forming ability — myosin quality produces firm, elastic gel under standard heating protocols
- Small body size — typical catch weight 80–200g; processed whole for mincing
- Mild flavor — neutral profile suitable for flavored end products (crab sticks, fish cakes, kamaboko)
Why Processors Choose Itoyori Over Other Species
Alaska pollock (Gadus chalcogrammus) dominates global surimi volume — primarily for US and European markets. Itoyori dominates the Asian surimi market, especially for Japanese and Thai end users, for three practical reasons:
- Gel strength: Itoyori consistently achieves higher gel strength than most tropical alternatives — a key quality parameter for kamaboko and premium crab sticks
- Whiteness: Natural whiteness index (L* value) is higher than bigeye snapper or lizardfish surimi, requiring less starch or titanium dioxide filler to hit product targets
- Supply geography: Fishing grounds in Vietnam, Thailand, India, and Indonesia keep freight costs to East and Southeast Asian buyers significantly lower than shipping pollock surimi from Alaska or Russia
The Fishing and Processing Chain
Itoyori is caught by bottom trawl in tropical coastal waters, primarily at depths of 50–200 meters. The catch is mixed-species; processors sort before mincing. Quality of the raw fish at the processing intake is the primary variable driving final grade — time between catch and processing, ice coverage on the vessel, and sea temperature all affect gel strength outcome.
Standard processing steps: heading and gutting → mincing → washing (to remove fat, blood, water-soluble proteins) → dewatering → blending with cryoprotectants (sorbitol, sucrose, polyphosphates) → block forming → freezing → cold storage at −18°C or below.
The washing cycle is the key quality variable. More washes produce higher whiteness and gel strength, but also increase water loss and reduce yield. Grade specification directly determines how many washes a processor runs — which is why agreeing on grade upfront, not as an afterthought, matters.
Grade System: What the Letters Mean
The industry grades Itoyori surimi by gel strength and whiteness. Different buyers use slightly different cutoff values in their contracts, but the general framework is consistent:
| Grade | Gel Strength (g·cm) | Whiteness (L*) | Typical Application |
| RA / Special A | ≥ 700 | ≥ 43 | Premium kamaboko, chikuwa |
| SA | 600–699 | ≥ 42 | High-end crab sticks, premium fish cakes |
| A | 500–599 | ≥ 40 | Standard crab sticks, fish balls |
| B | 400–499 | ≥ 38 | Economy fish balls, extruded products |
These are indicative ranges. Actual specifications are stated in the purchase contract and must match the Certificate of Analysis (CoA) issued by the processor. Verifying the CoA against the carton labeling before shipment is standard practice — not optional.
Who Buys Itoyori Surimi
Primary buyers are food manufacturers in Japan, South Korea, Thailand, and China producing kamaboko, crab-flavored sticks, fish balls, and dumpling fillings. Secondary buyers are importers and distributors supplying smaller manufacturers in these markets.
European buyers occasionally source Itoyori surimi for ethnic food lines or as a pollock alternative when pollock prices spike. The key EU import requirement: HACCP certification of the processing facility and a valid health certificate from the competent authority of the exporting country.
How to Source Itoyori Surimi from Vietnam
Vietnam produces Itoyori surimi across a range of grades — from Grade B through Grade RA — with facilities holding EU export approval and third-party HACCP certification. Season affects catch quality and therefore grade availability, which is why sourcing with a partner who tracks production schedules matters more than spot-buying.
I work with verified processors in Vietnam and can arrange product samples, coordinate factory audits on your behalf, and handle the export documentation chain. If you are evaluating Itoyori surimi as a raw material or looking to switch suppliers, reach out directly.
📧 alan@viet.zone
☎️ LinkedIn: Viet Pham — Seafood Trade Connections
Independent Seafood Sourcing Consultant based in Vietnam’s Mekong Delta. Former Operations Manager at Espersen Vietnam (Danish seafood group, 8+ years) and graduate of Nha Trang Fisheries University. I source specialty aquatic products for buyers in Japan, France, Hong Kong, China and Thailand — as a disclosed agent with full commission transparency.
