For a single meal where reducing fat is the main aim, start by comparing uncoated white-fish portions: Sainsbury's labels give less than 0.5g fat per 100g for its checked cod and 0.5g for its haddock after oven cooking. Its salmon label gives 3.4g per 100g, while coated fillets offer a different texture and preparation route but need a separate check of fat per fillet. Choose the number of pieces you need, then check the exact pack's nutrition and cooking instructions.
Individually frozen white-fish portions let you take out fish for one meal. For the checked Sainsbury's products, the labels give less than 0.5g fat per 100g for cod and 0.5g for haddock after oven cooking; add your own sides and check their labels separately.
Breaded or battered fillets offer a ready-coated option. ASDA Groceries lists 13g fat per oven-baked Birds Eye battered fillet and 11.3g per oven-baked Young's Chip Shop fillet. Check the weight and nutrition basis before comparing either with plain fish labelled per 100g.
If salmon appeals as an uncoated alternative, account for its different fat value. The checked Sainsbury's salmon label gives 3.4g fat and 0.8g omega-3 fatty acids per 100g, alongside the lower declared fat values on its checked cod and haddock portions.
Choose the fish format first, then compare nutrition on the same basis and check how many pieces you would cook for one meal.
| Priority | What to check | Your needs |
|---|---|---|
| Declared fat | Check whether the fish is plain or coated. Compare fat per 100g on like-for-like preparation bases, then use the per-fillet figure to assess the amount you plan to cook. | I want to compare what goes into one meal, not mistake a per-fillet value for a per-100g value. Sainsbury's checked cod and haddock labels give less than 0.5g and 0.5g fat per 100g after oven cooking; ASDA Groceries lists 13g per oven-baked Birds Eye battered fillet. |
| Portion size | Check the piece count, stated servings and whether portions are individually frozen. Follow the pack's instructions if a piece has thawed. | For one meal, I would rather take out only the pieces I intend to cook. The checked Sainsbury's cod and haddock packs describe individually frozen portions and approximately four servings. |
| Type of fish | Compare the exact labels for cod, haddock and salmon rather than treating all uncoated fish as nutritionally identical. Check fat per 100g and any declared omega-3 value separately. | Sometimes I want salmon rather than white fish, but I still need its fat figure in the comparison. Sainsbury's checked salmon label gives 3.4g fat and 0.8g omega-3 fatty acids per 100g. |
| Ingredients and allergens | Read the current pack's ingredients and allergen statement. Check coating ingredients separately; a gluten-free label does not state the product's fat content. | If I need to avoid an ingredient, the precise recipe matters. ASDA Groceries lists fish, wheat, milk and mustard for its checked Birds Eye battered fillets; its checked gluten-free Birds Eye breaded fillet declares 16g fat per oven-baked fillet. |
| Cooking method | Follow the method and cooking time on the exact pack. Where nutrition is given for a particular preparation method, retain that basis when comparing figures. | An air fryer is convenient for me, but its instructions alone do not tell me the finished fillet's fat value. I would check whether the nutrition figure applies to the method I plan to use. |
Sainsbury's checked labels give less than 0.5g fat per 100g for plain cod, 0.5g for haddock and 3.4g for salmon after oven cooking. Coated products also need their own label check.
Decide whether you want plain white fish, salmon or a coated fillet, then compare the exact products on matching nutrition bases.
A pack stating approximately four servings does not determine how many pieces you want for dinner. Nutrition stated per fillet also depends on which fillet and preparation method the label describes.
Check the piece count and nutrition panel before taking portions from the freezer. Follow any instruction not to refreeze fish once defrosted.
ASDA Groceries lists 16g fat per oven-baked fillet for its checked gluten-free Birds Eye breaded product. Its checked battered products also have their own per-fillet fat figures.
Check gluten suitability, cooking instructions and declared fat separately on the product you intend to buy.
The checked Birds Eye battered fillets list fish, wheat, milk and mustard as allergens on ASDA Groceries. Ingredients and allergen information are specific to the product.
For an allergy or intolerance requirement, read the current physical pack, including when buying a familiar product again.
These examples describe particular product labels or ranges, not every frozen-fish product sold under each name.
Its checked plain cod, haddock and salmon portions offer three uncoated fish options for comparing a single meal.
The checked products include battered fillets and a separately labelled gluten-free breaded fillet.
The checked Chip Shop product is a four-fillet coated-fish pack with oven and air-fryer guidance.
Its checked Wild Icelandic Cod Fillets provide another plain-fish label to compare.
Tesco Groceries lists coated-fish options including breaded cod, breaded haddock and a Free From battered whitefish product.
The checked ASDA Groceries pages give product information for specific Birds Eye and Young's coated fish.
This uncoated, individually quick-frozen pangasius option may suit a meal assembled from the number of pieces you choose. Check the pack when deciding the amount to cook and comparing fat values.
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Individually quick-frozen fillets let you choose pieces for a single meal. The stated pack weight is 1kg total and 800g net; check the pack for the amount in each piece and its nutrition before deciding how many to cook.
Start with an uncoated white-fish portion and compare exact labels per 100g. Sainsbury's checked cod and haddock portions are individually frozen and declare less than 0.5g and 0.5g fat per 100g after oven cooking; check the amount you intend to cook as well as any sides.
The checked Sainsbury's salmon label gives 3.4g fat per 100g, compared with less than 0.5g for its cod and 0.5g for its haddock after oven cooking. Its salmon label also declares 0.8g omega-3 fatty acids per 100g, so compare the figures relevant to your choice rather than treating the fish as interchangeable.
Air-fryer instructions do not, by themselves, establish a lower fat value. ASDA Groceries gives 13g fat per oven-baked fillet for the checked Birds Eye battered product and 11.3g for the checked Young's Chip Shop product; use nutrition stated for your chosen product and preparation method where available.
Read the current physical pack's ingredients and allergen statement for the exact fish product. Fish is an allergen, and the checked Birds Eye battered fillets also list wheat, milk and mustard on ASDA Groceries; do not assume another coating has the same recipe.
Follow the instruction on the exact pack. The checked Sainsbury's cod and haddock product information says not to refreeze once defrosted, so take out the pieces you intend to prepare and follow the pack's cooking directions.