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Plaice

Low FODMAP

Typical portion

  • Any typical portion Low

Plaice is Low FODMAP, a plain white fish that's essentially pure protein and fat with no fermentable carbs to worry about.

  • As a lean white fish, plaice carries negligible carbohydrate and no FODMAPs, so any typical portion sits comfortably low without a dose to watch.

Keep it low by cooking it simply, baked, grilled, or pan-fried, and lean on garlic-infused oil and herbs for flavor rather than garlic or onion in the pan.

Why plaice is rated low

Plaice comes in low because of what it is made of rather than because a portion was weighed out: a lean flatfish fillet is protein and a little fat, with almost no carbohydrate for fermentable sugars to sit in. The data here is an estimate from that composition rather than a measured serving, which is why the portion guide is worded plainly and rates "Any typical portion" as low instead of naming an amount. So a normal fillet of plain plaice is not the thing to question when a meal goes badly. The things worth questioning are everything that arrives with it: batter, breadcrumbs, a parsley cream sauce, a fish stock cube or a jar of fish seasoning can each carry a load the fish itself never had. Amounts beyond a normal portion are not covered here, so low describes plain plaice on a plate, not an unlimited licence.

What changes your risk

  • Serving size The guide covers "Any typical portion" and rates it low. Helpings well beyond a normal plate of fish are not tested here, so treat a standard fillet as the picture the rating describes.
  • The coating Fish fingers, goujons, breaded fillets and chip shop batter are wheat dishes with fish inside. The crumb or batter, not the plaice, is what decides how that plate lands, so judge those by the coating.
  • Sauce, stock and seasoning Onion and garlic hide in fish stock cubes, court bouillon, ready made parsley or white sauce, and blended fish rubs. Read the seasoning jar rather than assuming a spice blend is only spice.
  • Prepared and cured forms Marinated, smoked or pre-basted fillets often pick up onion powder, garlic powder or honey in the cure. A plain fillet you season yourself gives you far more control than one sold ready flavoured.
  • The rest of the meal Plaice contributes nothing to the day's total, but the total is still what matters. A meal is judged by the bread, the sides and the sauce around the fish, since several low servings sharing one subgroup in one sitting can add up even when each is fine alone.

What else works

Plain fish is one of the easiest categories to work with, so cod, haddock, sole, trout, salmon and plain tuna all sit in the same comfortable place as plaice, and eggs or firm tofu fill the same protein slot on a plate. The lookalikes to watch are plaice in disguise rather than other fish: breaded fillets and fish fingers, battered fish from a fryer, fish pie and fish in a creamy or milk based white sauce, seafood chowder, and pre marinated seafood mixes. None of those are a verdict on the fish itself, but they are not the same food on your plate.

How to keep it low

Buy plain fillets from the counter and ask for them unseasoned, or check that a frozen pack lists fish and little else rather than fish in sauce. Season before cooking with salt, pepper, paprika or dried herbs instead of a blended fish seasoning that may open with onion powder. Plaice cooks fast and thin, so a hot pan with garlic infused oil, a squeeze of lemon, capers and chives makes a sauce in the time the fillet takes, with no stock cube involved. When ordering out, grilled or pan fried with lemon and butter keeps the plate close to the plain fish, while the parsley sauce and the batter are the parts to leave off.

Common questions

how much plaice can i eat on a low fodmap diet

The portion data for plaice is worded plainly rather than in grams, and it rates "Any typical portion" as low. A normal fillet is not the part of the meal to count, so put your attention on the sauce, the coating and the seasoning instead.

can i eat plaice during the elimination phase

Plain plaice, cooked simply, fits the elimination phase without a portion to watch. The parts that need checking are the stock, sauce or rub it is cooked with. Tolerance is individual, and reintroductions are worked through with a dietitian.

are breaded plaice fillets low fodmap

Breaded and battered fillets are best judged as a wheat coating rather than as plaice. The fish underneath is unchanged, but the crumb or batter is what makes that a different food on the plate.

is plaice or cod better on a low fodmap diet

Neither carries a load to count, so there is nothing to choose between them on that basis. The difference is entirely in how they are cooked, since a cod fillet in an onion heavy sauce is a harder plate than a grilled piece of plaice.

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Learn more

What Are FODMAPs? A Plain-English Guide Low FODMAP Elimination Phase: A Week-by-Week Guide FODMAP Stacking: Why You Reacted to 'Safe' Foods How to Read Food Labels on Low FODMAP

Informational only, not medical advice. Individual tolerance varies. Talk to a healthcare professional or a dietitian for personal guidance.

Plaice is an estimated rating: it is inferred from the food's ingredients and composition and cross-checked, not measured directly in the papers below. The low, moderate and high cutoffs are still those of Varney et al. (2017).

References

  1. Fructan and free fructose content of common Australian vegetables and fruit. Muir et al. (2007), J. Agricultural and Food Chemistry 55(16):6619-6627.
  2. Measurement of short-chain carbohydrates in common Australian vegetables and fruits by HPLC. Muir et al. (2009), J. Agricultural and Food Chemistry 57(2):554-565.
  3. Quantification of fructans, galacto-oligosaccharides and other short-chain carbohydrates in processed grains and cereals. Biesiekierski et al. (2011), J. Human Nutrition and Dietetics 24(2):154-176.
  4. Dietary sorbitol and mannitol: food content and distinct absorption patterns. Yao et al. (2014), J. Human Nutrition and Dietetics 27(Suppl 2):263-275.
  5. FODMAPs: food composition, defining cutoff values and international application. Varney et al. (2017), J. Gastroenterology and Hepatology 32(Suppl 1):53-61. Supplies the low, moderate and high cutoffs used on this page.

Last reviewed September 22, 2026.