Overview
About Hake
Hake, or merluza, is the everyday fish of Spanish and Portuguese kitchens, and its trigger profile is almost entirely a question of how long ago it was caught.
On the columns themselves it is clean: A on gluten, on every FODMAP category, on lactose, salicylates, oxalates, nickel, sulfites, nitrites and glutamates, with histamine, histamine liberation and tyramine all sitting at a moderate B. What makes hake different from cod or haddock is the flesh. It is soft, watery and weakly structured, so it loses condition noticeably faster than a firmer whitefish, and biogenic amines climb while the fillet still looks acceptable on the counter. Almost every reported reaction to hake is really a reaction to hake that was two days older than it should have been.
Sensitivities
How Hake scores
Watch for
What trips people up
- Soft, high-moisture flesh means a short window of good condition. A fillet that has gone slack or slightly mushy under the finger, or that smells faintly of ammonia, is already past the point where amines have started to rise. Frozen at sea or bought and cooked the same day is the practical rule
- Histamine, histamine liberation and tyramine all grade B, so hake is usually workable on a low-histamine diet with one condition: cook it fresh and do not eat it again the next day. Refrigerated cooked fish is where most people reintroduce the problem they just avoided
- Battered and breadcrumbed hake (merluza a la romana or rebozada) is standard in Spain and adds wheat gluten, and many pub batters include milk or beer. The fish is gluten free, the way it usually arrives is not
- Merluza en salsa verde, the classic preparation, is built on a lot of garlic and parsley finished with white wine, sometimes with clams. Garlic is high in fructans and wine brings both sulfites and its own histamine, so the sauce carries far more trigger load than the fillet
- Hake cheeks (kokotxas) and hake in cream or pil pil sauces concentrate the same issue: gelatinous cuts are handled more and travel less well, so freshness matters even more than for the loin
Diet fit
Where it fits
Swap ideas
More alternatives
FAQ
Common questions about Hake
Is hake high in histamine?
Hake grades moderate (B) for histamine, and the same for histamine liberation and tyramine. The number describes a well-handled fish. Hake flesh is unusually soft and water-rich compared with cod or haddock, so it degrades faster once the cold chain slips, and histamine forms as it degrades. In practice that means hake is a reasonable choice for most people with histamine intolerance if it was frozen at sea or bought and cooked the same day, and a poor one if it has been sitting on ice at a counter for a couple of days.
Is hake low FODMAP?
Plain hake is low FODMAP: it grades A on fructans, galacto-oligosaccharides, excess fructose and polyols, as all unprocessed fish does. The catch is the way hake is nearly always served in Spain and Portugal. Salsa verde is essentially a garlic sauce, and garlic is one of the highest fructan foods there is. If hake reliably upsets your gut, cook a fillet with olive oil, salt and lemon and see whether it still does.
Does hake contain gluten?
No. Hake is naturally gluten free and grades A on the gluten column. Most of the ways it reaches the table are not. Merluza rebozada is coated in flour and egg, merluza a la romana is battered, and frozen breaded hake portions are wheat crumbed. Fish soups and stews thickened with flour are another route. If you are coeliac, the fish is fine and the coating is the thing to ask about.
Is hake high in mercury?
No. Hake is a modest-sized, relatively short-lived fish that feeds low in the food chain compared with predators like grouper, shark or swordfish, and it consistently tests low for mercury. That makes it one of the whitefish generally considered fine to eat regularly, including during pregnancy. Its handling and freshness, not its contaminant load, are what deserve your attention.
References
Read the background
Ratings reflect the Triggerbites ingredient database and may vary with portion size and preparation.