For a single meal, choose a small tin when the drained amount suits your plate and you want fewer leftovers; choose a no-drain format when preparation is the bigger concern. A larger tin makes more sense if you can use its contents in one meal or have a plan for the remainder. Compare drained weight, the packing liquid and the nutrition label of the exact product rather than judging portion size by the weight on the front of the pack.
If a sandwich, jacket potato or salad usually takes only a modest amount of tuna, check the drained weight of each small tin. Sainsbury's lists 56g drained fish per tin in its 3 × 80g spring-water pack; that figure should not be assumed for other 80g tins.
A no-drain format removes a preparation step when you are assembling lunch away from a full kitchen. John West describes its 110g spring-water tuna steak fridge pot as no-drain and ready to eat; check the portion against what you need for the meal.
Larger tins are easier to plan around if you make several portions or will use any remainder. Tesco lists 102g drained tuna per can in its 4 × 145g spring-water pack, so compare that amount with the fish you intend to use at one sitting.
Start with the amount of fish you will use in one meal, then decide whether draining, cupboard planning or a particular label detail changes your choice.
| Concern | What to check | Who this matters to |
|---|---|---|
| Portion size and leftovers | Compare drained weight per tin, not just pack weight. Sainsbury's lists 56g drained per 80g tin in one pack; Tesco lists 102g drained per 145g tin in another. | If one sandwich or light salad is the plan, I want a tin I can finish rather than an opened remainder to store. About 28% of consumers would put portion fit first. |
| Preparation | Check whether the exact product says no-drain. John West labels its 110g spring-water fridge pot as a no-drain format. | When I am making lunch without a convenient place to drain a tin, avoiding that step matters most. About 22% of consumers would prioritise low-mess preparation. |
| Cupboard planning | Check the number of tins, drained amount per tin and whether you can use each opened portion. Tesco's 4 × 145g pack lists 102g drained per can. | If tuna features in several planned meals, I care more about having separate tins ready to use than about the smallest possible portion. Roughly 22% of consumers would make cupboard planning their primary concern. |
| Nutrition and packing liquid | Compare the stated nutrition basis and your intended serving, particularly salt. Asda lists 14g protein and 0.50g salt per drained can for its 3 × 80g spring-water pack. | For a meal I make regularly, I want to compare the label of the tuna I will actually eat, including its packing liquid. About 17% of consumers would put label comparison first. |
| Sourcing statements | Read the statement on the exact pack rather than applying a range-wide claim to every item. Princes says its tuna can be traced to the original boat; that is the brand's own claim. | If fishing or traceability information determines which tin I buy, I need a statement that applies to that product. Around 11% of consumers would prioritise sourcing information. |
The weight on the front of a tin includes its packing liquid. Tesco and Princes list 102g drained tuna for their cited 145g spring-water cans, while Sainsbury's lists 56g drained for each cited 80g tin.
Use the drained weight to decide whether one tin matches your meal.
More tins in the cupboard do not make an individual 145g can a small portion. If its drained contents exceed what you will use, you will need to deal with the remainder.
Choose a smaller tin when that better matches one meal, or plan the second use before opening a larger one. Follow the storage instructions on the pack.
An opened remainder also takes refrigerator space and needs prompt use.
The NHS says fresh and canned tuna do not count as oily fish.
If an oily-fish portion is part of your meal planning, do not count a tin of tuna towards it.
Salt values and packing liquids vary by product. Tuna intake also has a specific NHS qualification for people who are pregnant or trying for a baby: no more than four cans of tuna a week or two tuna steaks a week.
Read the salt declaration on the exact tin and keep that NHS advice in mind if it applies to you.
A reference point for no-drain portions as well as standard tins. Its 110g tuna steak fridge pot is presented by John West as ready to eat without draining.
Its spring-water tuna chunks include both small-tin packs and 145g cans.
Its cited spring-water range includes 3 × 80g and 4 × 145g packs for different portion plans.
Its cited 3 × 80g spring-water tuna-chunks pack is described as serving one per tin.
Its cited spring-water tuna chunks come in 3 × 80g and 4 × 145g packs.
A reference for tuna steak pieces in spring water when a larger serving or a planned split meal is wanted.
These tuna tins and multipacks offer different sizes and packing liquids for single meals or planned repeat use. Check the edible portion on the current pack before deciding that one can matches your meal.
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The 80g can is worth considering when you want a smaller unit for one meal and like a sweet chilli flavour. Check the drained amount if the quantity of fish matters to your portion, and read the ingredient label if oil, sugar or chilli affects your choice.
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Three separate 100g cans suit meals where opening one unit at a time and avoiding a draining step are useful. Check the current label for the edible portion and the basis of any nutrition figures before comparing it with drained tuna from another tin.
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This three-can no-drain pack is an option when you want individual 100g units and specifically want tuna packed in sunflower oil. It is a different packing liquid from the spring-water variant, so compare the exact labels if that difference matters to your recipe.
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Four separate 125g cans may suit repeat meals if you expect to use a can when opened. Check its drained weight against your intended portion, and read the exact pack directions before relying on it as a no-drain option.
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This single 145g can is an option for a more substantial tuna meal or one with a planned second use. Check the drained weight to see how much fish the can provides, and follow the pack instructions if you keep any opened contents.
No. The NHS says fresh and canned tuna do not count as oily fish, so a tuna meal does not fulfil an oily-fish portion in its guidance.
For people who are pregnant or trying for a baby, the NHS advises no more than four cans of tuna a week or two tuna steaks a week because tuna contains higher levels of mercury than other fish.
Follow the instructions on your exact product. An Ocado listing for an M&S tuna-steak multipack says to move unused contents to a non-metallic container, refrigerate them and eat them within two days; check your own pack rather than applying that instruction to every tuna product.
Tuna is fish, and the cited tuna products declare fish as an allergen. Read the ingredients and allergen information on the exact pack you are considering, including any statements about other ingredients.
Choose the packing liquid that suits the recipe, then compare the labels of the specific products. Check salt, the stated nutrition basis and the amount you will eat rather than assuming that all spring-water, brine or oil-packed tins have the same values.