Who each format suits

For a smaller household, the useful distinction is whether tuna needs to be ready when plans change or is intended for a cooked meal.

Quick-meal smaller households

Shopping for one or two and want a cupboard ingredient for sandwiches, pasta or an improvised lunch? Tinned tuna avoids a thawing step. Check the can size and drained weight against the amount you are likely to use.

Cooked-fish dinner planners

If a tuna steak is the main part of dinner, frozen fillets offer a different meal format from ready-to-eat chunks. Allow for freezer storage and follow the cooking or defrosting directions on the chosen pack.

Label-led tuna shoppers

If packing liquid, salt, species or sourcing decides your purchase, compare those details on the exact product. A certification mark and a nutrition panel answer different questions.

What matters when choosing

For meals for one or two, decide first whether you need a ready-to-eat ingredient or a steak to cook; then check the pack details that could change your plans.

Concern What to check Who this matters to
Quick, flexible meals Check the can size, drained weight and whether the tuna needs draining. When lunch plans change, I want tuna I can add to a sandwich or pasta without thawing it; about 42% of consumers put immediate meal flexibility first.
A cooked tuna meal Check freezer storage, whether the steaks cook from frozen and what the pack says to do after thawing. If I want a tuna steak for dinner, I need the cooking method to fit my evening; roughly 33% of consumers prioritise a cooked steak meal.
Nutrition and sourcing labels Compare the exact pack’s ingredients and nutrition panel; look for a product-specific certification mark if sourcing matters. When the label is my deciding factor, I want to know what is in the pack and what any sourcing mark covers; about 25% of consumers make nutrition or sourcing details their primary concern.

Buying pitfalls

  • Counting tuna as the oily-fish portion

    NHS guidance does not count fresh or canned tuna as oily fish, even though tuna can be part of a fish meal.

    If you are planning meals around the NHS fish guidance, include a separate oily-fish choice rather than relying on tuna for that portion.

  • Assuming equal-sized cans contain equal amounts of tuna

    Water, brine and oil-packed products can differ in how much tuna remains after draining. A no-drain product is a different format again.

    Compare net weight, drained weight where stated, and packing liquid on the cans you are considering.

  • Using one frozen steak’s instructions for another

    Tesco lists a frozen tuna steak that can be grilled from frozen, while a Morrisons frozen yellowfin product gives refrigerator-defrosting instructions. Preparation and storage directions are product-specific.

    Read the chosen pack before planning dinner, particularly its directions for thawing, cooking and use after defrosting.

    Thawing earlier than planned can leave less time to use a steak if its label says to use it the same day and not refreeze it.

  • Using one label as a verdict on everything

    An MSC sourcing label, a manufacturer’s traceability statement and a nutrition panel address different aspects of a tuna product. None replaces the others.

    Check sourcing information if it matters to you, then read the exact pack’s ingredients and nutrition separately.

Brands to consider

These brands provide examples of the formats and product details worth comparing; descriptions of one range or pack do not apply to every product bearing the brand name.

John West

Its tinned-tuna range includes no-drain chunks in spring water for ready-to-eat meals.

  • For its No Drain Tuna Chunks in Spring Water MSC, John West lists 27g protein and 0.8g salt per 100g.
  • Those figures describe that product, not every John West tuna pack; compare the label on the variant you choose.

Princes

Princes describes a canned-tuna range that includes chunks, drained tuna, sandwich tuna and steaks.

  • The range gives shoppers several formats to compare for different meals.
  • Princes says its canned tuna is traceable to the boat. Treat that as a brand sourcing statement and check the chosen pack’s other details separately.

Tesco

Tesco Groceries lists both tinned tuna and frozen yellowfin steaks, offering examples of the two meal formats.

  • Its listings include tinned chunks in different packing liquids and frozen steak products.
  • Cooking directions shown for one Tesco steak product should not be applied to another pack.

M&S

M&S describes its wild Pacific yellowfin steaks as skinless, boneless and flash-frozen.

  • The product description identifies a frozen fillet format for a cooked meal.
  • M&S’s sourcing and traceability descriptions are claims about that product, not a comparison with all frozen tuna.

Joybuy product selections

These selections include tinned tuna for flexible cupboard meals and frozen steaks for a planned cooked dinner. Compare the pack format and preparation needed before choosing between them.

John West No Drain Tuna Chunks in Springwater, three 100g cans

John West No Drain Tuna Chunks in Springwater, 3 × 100g

For flexible lunches, three separate 100g cans let you open one as needed. This is no-drain tuna in spring water; check the usable quantity on the pack when comparing it with tuna sold by drained weight.

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John West No Drain Tuna Chunks in Sunflower Oil, three 100g cans

John West No Drain Tuna Chunks in Sunflower Oil, 3 × 100g

For a ready-to-eat cupboard ingredient, this multipack has three separate 100g cans. It is a no-drain sunflower-oil variant, so choose it only if that packing medium suits the meal you have in mind; check the pack’s usable quantity when comparing portions.

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Morrisons Fad Free Tuna Chunks in Spring Water, 145g can

Morrisons Fad Free Tuna Chunks in Spring Water, 145g

A single can may suit a household that wants tuna for one planned meal rather than a multipack. The stated 145g is the can size; check its drained weight if the amount of tuna you can serve matters to your choice.

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Princes Tuna Chunks in Brine, four 145g cans

Princes Tuna Chunks in Brine, 4 × 145g

For several separate cupboard meals, this pack contains four cans of ready-to-eat tuna chunks in brine. Check the drained weight on the pack before deciding how much tuna each can will provide.

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Frozen tuna steaks, two steaks in a 260g pack

Frozen Tuna Steaks, 2 Steaks, 260g

For a cooked tuna dinner, this pack contains two frozen steaks with a stated total weight of 260g. Allow for freezer storage and follow the product’s thawing and cooking instructions. If you intend to eat tuna raw, confirm the product-specific guidance rather than relying on a description in its title.

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Questions about buying and using tuna

Does tinned tuna count as an oily-fish portion?

No. NHS guidance does not count fresh or canned tuna as oily fish. If you are using its fish guidance to plan meals, choose a separate oily-fish option for that portion.

Can I cook frozen tuna steaks without thawing them?

Only when the chosen product gives a cook-from-frozen method. A Tesco frozen tuna-steak listing gives a 20-minute grill-from-frozen method and a separate shallow-fry method after defrosting; follow the directions on your own pack rather than transferring those times to another steak.

What should I do once frozen tuna has thawed?

Follow the storage directions for that product. Morrisons instructs buyers of one frozen yellowfin-tuna product to defrost it in the refrigerator for approximately 12 hours, use it the same day and not refreeze it after thawing. Another pack may give different directions.

Does an MSC label tell me about a tuna pack’s nutrition?

No. An MSC ecolabel concerns certified sourcing, not the pack’s salt content or packing liquid. Read the nutrition panel and ingredients on the exact product for those details.