Batch cooks comparing value
If tuna regularly goes into multi-serving pasta bakes or potato fillings, you need to compare how much drained tuna each pack provides, not just the number of tins.
Who is buying for winter meals?
Quick-meal cooks
For a jacket potato, sandwich or quick pasta dish, a smaller or no-drain can may be easier to use when you want little leftover liquid.
Shoppers checking sourcing
If sourcing affects your choice, look for certification or a specific sourcing statement on the individual pack alongside its size and packing liquid.
What matters when choosing tinned tuna?
Start with the amount of tuna your meal needs. Then compare drained-weight unit prices, packing liquids and can sizes for products that fit that meal.
| Concern | What to check | Who this matters to |
|---|---|---|
| Comparable value | Compare the unit price per drained kilogram and the pack’s drained weight. Check whether a shelf offer has conditions. | If tuna is a regular ingredient in multi-serving winter meals, the amount left after draining matters more to me than the tin count. About 33% of consumers put comparable drained-weight value first. |
| Recipe fit | Choose between spring water, brine and oil using the exact variant’s ingredients and nutrition panel. | For a pasta bake or potato filling, I want a packing liquid that works with the other ingredients. Recipe fit is the primary concern for about 25% of consumers. |
| Convenience and portions | Check can size, whether draining is needed and the instructions for storing leftovers. | When I need tuna for one quick meal, I would rather open a suitable portion than have an opened can left over. About 17% of consumers prioritise quick use or portion size. |
| Sourcing assurance | Look for an MSC ecolabel or a precise sourcing statement on the individual pack. | If sourcing is central to my choice, I want to check the tuna I am actually buying rather than rely on a brand-wide assumption. About 25% of consumers put sourcing assurance first. |
What is easy to overlook?
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Comparing gross tin weights as though they were drained weights
A tin’s stated weight can include packing liquid, so two similarly sized packs may provide different amounts of tuna for a recipe.
Use the unit price per drained kilogram where it is shown, and check the drained weight on the exact pack.
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Using a loyalty offer as the baseline
Tesco has listed separate regular and Clubcard terms for some tuna multipacks. An offer that requires eligibility or has an end date is not the same basis as a regular shelf listing.
Compare regular listings first, then consider an offer only if its conditions apply when you buy.
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Assuming a sourcing claim covers every variant
The Marine Stewardship Council’s February 2026 review found MSC-labelled shelf-stable tuna alongside products without that label. A claim associated with a range does not identify every individual pack.
Check the exact variant for the MSC ecolabel or the sourcing statement you require.
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Overlooking allergens and opened-can instructions
GOV.UK identifies fish as an allergen that food businesses must declare when present. Storage directions can also be specific to the product: M&S Food instructs customers to transfer unused tuna to a non-metallic container, refrigerate it and use it within two days.
Read the fish allergen declaration before buying, and follow the storage instructions on the can you open.
Brands and ranges to consider
Tesco
Tesco Groceries lists own-label chunks in several packing liquids and pack formats, making its range relevant when comparing tuna for regular household cooking.
- Spring-water and brine multipacks give shoppers standard chunks to compare by drained weight.
- Check the exact format: smaller cans and tuna steaks should not be treated as equivalent to standard chunks.
Princes
Princes offers branded chunk multipacks, including spring-water tuna listed by Tesco Groceries.
- Tesco Groceries identifies the spring-water 4 x 145g variant as four cans with 102g drained weight per can.
- Check the regular drained-weight unit price separately from any conditional loyalty offer.
John West
John West has standard chunks and a distinct No Drain range for meals where avoiding a draining step matters.
- John West describes its No Drain spring-water chunks as ready to add to meal preparation or pasta.
- Confirm that the particular pack says No Drain; do not assume the description applies to every John West spring-water multipack.
Sainsbury's
Sainsbury's lists own-label tuna chunks in spring water, brine and oil, offering different liquids for different recipes.
- In 2023, Sainsbury's stated that its own-label canned tuna was MSC certified and pole-and-line caught.
- Check the current individual pack for the sourcing information and packing liquid you want.
Asda
Asda Groceries lists an own-label spring-water chunk multipack with drained-weight and nutrition information.
- Its spring-water 4 x 145g listing displays an MSC logo for that product.
- Asda advises checking the pack label because product information can change.
M&S
M&S Food describes spring-water tuna chunks with a stated pole-and-line sourcing practice.
- Its product information includes ingredients, nutrition and opened-product storage instructions.
- Check the individual pack and local listing before comparing it with other formats.
Joybuy tuna selections
These Joybuy packs cover branded chunks in oil, spring water and brine, plus smaller No Drain formats. Choose the liquid and can size for your meal, then check drained weight before making a value comparison.
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Princes Tuna Chunks in Sunflower Oil 4 x 145g
Consider this four-can pack when sunflower oil suits the pasta dish or jacket-potato filling you are making. It contains fish; check the pack’s drained weight before comparing it with tuna packed in other liquids.
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John West Tuna Chunks in Springwater 4 x 125g
This four-can spring-water pack is an option for recipes where you want to add tuna to a sauce or filling. Check its drained weight for a like-for-like comparison, and check the pack if avoiding draining is important: this variant is not identified as No Drain.
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Princes Tuna Chunks in Brine 4 x 145g
Choose this four-can format when brine-packed chunks fit the meal you plan to make. The product contains fish; read its nutrition panel if the brine affects your ingredient choice, and check drained weight when comparing packs.
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John West No Drain Tuna Chunks in Sunflower Oil 3 x 100g
The three smaller No Drain cans suit a meal where you want sunflower-oil tuna without a separate draining step. If sourcing certification is essential, check the individual pack for the label; the product contains fish.
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John West No Drain Tuna Chunks in Springwater 3 x 100g
This three-can No Drain spring-water format suits a quick sandwich or pasta meal when a smaller can and less draining matter. Check the pack’s opened-product storage directions if you will not use a whole can; it contains fish.
Tinned tuna questions
Should I choose tuna in spring water, brine or oil for a winter meal?
Choose the packing liquid to suit the other ingredients: spring water if you want to add tuna to a prepared sauce, brine if that packing liquid suits the dish, or oil if you intend to use oil-packed tuna. Check the exact variant’s ingredients and nutrition panel rather than treating the liquids as interchangeable.
Is tin weight enough to compare tuna packs?
No. For tins you plan to drain, compare the unit price per drained kilogram and the stated drained weight. Gross pack weight can include different amounts of packing liquid.
How should I store tuna left after opening a can?
Follow the directions on the can you bought. M&S Food, for example, instructs customers to transfer unused tuna to a non-metallic container, refrigerate it and eat it within two days of opening.
What should I check if fish is an allergen concern?
Check the packaged food’s allergen declaration before buying or using it. GOV.UK lists fish among the allergens that food businesses must declare when it is present as an ingredient, and tuna is fish.