You're staring at a Japanese menu or a frozen food label. It says "unagi." No English word next to it. Is that a fish? A sauce? A brand name? This mix-up costs restaurant buyers real money when specs get mistranslated on a purchase order.
Here's the short answer: unagi in English simply means "freshwater eel". Specifically, it refers to Japanese freshwater eel, most commonly the species Anguilla japonica. That's the direct unagi translation you'll find in any serious culinary dictionary or import document. But the full picture — the one that actually matters when you're sourcing product — has more layers than that one-line definition suggests.
This is where most buyers trip up. "Unagi" gets used loosely in English-language menus to mean three different things at once:
If a supplier tells you "we sell unagi," that sentence alone tells you almost nothing about what's actually in the box. Is it live eel? Frozen fillets? Pre-cooked and glazed? Getting this wrong on a PO is one of the most common sourcing mistakes we see from first-time importers.
To buy correctly, you need to separate three layers of meaning. This table breaks down what each layer actually tells you — and what happens if you confuse them on a spec sheet.
| Layer | What It Means | Where It's Used | Risk If Misunderstood |
|---|---|---|---|
| Literal translation | "Unagi" = freshwater eel in Japanese | Dictionaries, food labeling, customs declarations | Confusing it with saltwater eel species (like conger eel, "anago") leads to wrong tariff codes and mislabeled imports |
| Culinary usage | Grilled, soy-glazed eel dish, usually kabayaki-style | Restaurant menus, sushi counters, retail packaging | Buyers expecting raw fillets may receive fully cooked, glazed product — or vice versa, causing kitchen prep mismatches |
| Scientific species name | Anguilla japonica (Japanese eel); sometimes Anguilla anguilla (European eel) is substituted | Farming records, export documentation, food safety audits | Substituting species without disclosure can violate import regulations or mislead end buyers about origin and quality |
Notice the gap between the second and third rows. A menu might say "unagi" for marketing purposes, but the species behind it could vary depending on where and how it was farmed. That distinction matters more to a wholesale buyer than a dinner guest, but both deserve accurate labeling.
Short answer: yes, unagi is freshwater eel in English. The confusion usually comes from a related Japanese term, "anago," which refers to saltwater conger eel. Both appear on sushi menus. Both look similar once glazed. But they are different animals entirely, with different flavor profiles and different price points.
Common mistake: assuming any glazed eel dish on a menu is unagi. If the menu lists both "unagi" and "anago" separately, that's not redundant — it's two different species being offered, and pricing usually reflects that.
For sourcing purposes, if your supplier's paperwork says "freshwater eel" or references Anguilla japonica, you're looking at true unagi. If it says "conger eel" or "saltwater eel," that's anago, and it should never be substituted silently on an export order.
When you're reviewing a supplier's spec sheet or product label, run through this checklist before signing off on an order:
Skipping any one of these often means a mismatch between what a chef expected and what arrives in the cold-chain shipment.
"Kabayaki" is the roasting and glazing method — not the species. In English, it's usually described as "grilled and glazed eel," typically basted with a soy-based sauce through multiple coating passes. Our own process uses four precise layers of soy sauce application, each with controlled temperature steps, building what we call the "1st-through-4th soy-sauce coating color" standard. This is different from a "white-roasted" product, which skips the sauce layers entirely and relies on the natural roast color of the eel itself.
Why does this matter for buyers? Because "kabayaki eel" and "white-roasted eel" are not interchangeable on a menu or in a retail freezer case. If a customer expects the deep amber color and sweet-savory glaze of kabayaki but receives white-roasted eel, that's a product complaint waiting to happen. You can review the difference directly on our unagi kabayaki product page.
Say a mid-size restaurant chain wants to add a donburi bowl to its menu. The chef wants consistent portion sizes and minimal back-of-house prep. Here's how the decision usually plays out:
This is a realistic path many wholesale buyers follow before their first container order. Skipping step 3 or 4 is where most post-delivery disputes originate.
Once you understand the Japanese eel name and its scientific backing, the practical question becomes sourcing quality. Farming conditions affect fat content, texture, and roasting results significantly. Eel raised in controlled, registered farms tends to produce more consistent white-roasted color and better sauce absorption during the four-layer glazing process. This is part of why traceability — from farming registration through to the finished product — matters as much as the translation itself. You can see how farm-level sourcing feeds into finished product quality on our eel farm page.
The English name is "freshwater eel," specifically referring to Japanese eel (Anguilla japonica) when used in the context of Japanese cuisine.
Yes. Unagi specifically denotes freshwater eel, distinct from anago (saltwater conger eel), which is sometimes confused with it on sushi menus.
On packaging, "unagi" should correspond to freshwater eel product, whether raw, white-roasted, or kabayaki-glazed. Always check the processing state and species name listed alongside the term.
Need help matching a spec to your kitchen's exact prep needs? Reach out with your cut format, glaze preference, and target market, and we'll help you narrow down the right unagi kabayaki or eel sauce spec for a sample order.
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