Who is choosing a single tin?

Shoppers checking ingredients closely

If you are in the restriction stage of a low FODMAP diet, an unflavoured tin makes it easier to check each ingredient. Cambridge University Hospitals NHS Foundation Trust identifies onion and garlic as sources of fructans, so read the full list rather than relying on the flavour name.

Shoppers planning one meal

For a sandwich, salad or jacket potato, compare the drained weight and stated servings with the amount your recipe needs. The net weight includes the packing liquid.

Shoppers comparing salt and sourcing

Once the ingredients meet your needs, compare salt figures on the same label basis and look for sourcing statements on the particular tin. Do not assume a statement applies across a brand's range.

What matters when buying?

Concern What to check Who this matters to
Added ingredients Read the full ingredient list, particularly on flavoured, marinated or sauce-packed tuna. If I am in the restriction stage, I want to avoid overlooking onion or garlic in a seasoning. About 50% of consumers put ingredient control first.
Amount for one meal Compare drained weight and the number of servings; check the label's instructions for leftovers. When I am making one lunch, I need to know how much tuna remains after draining and whether I will have leftovers. Around 30% of consumers put meal-size convenience first.
Salt and sourcing Compare salt per 100g on the same stated basis, and read any product-specific sourcing statement. If the ingredients suit my meal, I may want to distinguish otherwise similar tins by their salt labels or stated fishing method. Roughly 20% of consumers make that comparison their primary concern.

What is easy to overlook?

  • Assuming every tuna recipe is equally suitable

    Monash FODMAP discusses unflavoured canned fish, not every sauce or marinade sold with it. Cambridge University Hospitals NHS Foundation Trust identifies onion and garlic as fructan sources.

    Start with the complete ingredient list and add seasonings you already know suit your diet, rather than judging a flavoured tin by its front label alone.

  • Treating net weight as drained weight

    The packing liquid contributes to the net weight. Tesco lists 112g drained weight for its 160g spring-water tin, while Sainsbury's describes its 145g tin as containing two servings.

    Check drained weight and serving information against the amount your meal calls for.

    A tin that leaves more than you need also means planning how to use the opened remainder.

  • Relying on an older online listing

    Ingredients, nutrition information and storage instructions can change between the listing you read and the tin you buy.

    Check the current tin for ingredients, fish allergen information, drained weight and instructions after opening.

  • Opening more tuna than you can use

    Opened-product instructions differ between tins. The cited Sainsbury's product says to use refrigerated leftovers within one day; the cited Tesco, Princes and M&S products state two days.

    Choose a quantity that fits your meal or plan another meal within the period printed on your tin.

Brands to consider

These details concern particular spring-water tins, not every product in each brand's range.

Tesco

Tesco lists an individually sold 160g tin of tuna chunks in spring water.

  • The listed ingredients are skipjack tuna and spring water; the drained weight is 112g.
  • Tesco lists 1.0g salt per 100g drained for this tin. Check the current label when comparing it with another product.

Sainsbury's

Sainsbury's lists a 145g spring-water tin with skipjack tuna and spring water as its ingredients.

  • This product lists 0.12g salt per 100g drained and carries product-specific sourcing statements.
  • Its opened-product instruction says to use refrigerated leftovers within one day.

Princes

The cited Princes 145g spring-water tin lists tuna and spring water.

  • The product listing gives 23.5g protein and 0.85g salt per 100g drained.
  • Its instructions say to refrigerate leftovers in a sealed container and use them within two days.

John West

John West has spring-water tuna products, including a no-drain format.

  • John West lists tuna, spring water and salt in its cited no-drain product.
  • That no-drain listing is a three-pack, so check the pack format if you need one individually sold tin. Assess flavoured variants by their own ingredients.

M&S

The cited M&S 160g spring-water product lists skipjack tuna and spring water.

  • M&S states that this product is pole-and-line caught under its Forever Fish policy.
  • The listing gives 0.75g salt per 100g and says to use refrigerated leftovers within two days. Check the salt basis before comparing figures from other tins.

Single tins on Joybuy

These are individual tins of tuna chunks in spring water to consider when you want a plain format for a low FODMAP meal. Check the current tin's ingredients and drained weight before choosing an amount for your recipe.

Morrisons Fad Free Tuna Chunks in Spring Water 145g

Morrisons Fad Free Tuna Chunks in Spring Water 145g

Consider this individual tin if a 145g spring-water format fits your shopping plan. Check the ingredients and drained weight on the can to judge whether the tuna suits your diet and the amount suits one meal.

View on Joybuy
Topical Sun Tuna Chunks in Springwater 160g

Topical Sun Tuna Chunks in Springwater 160g

This 160g spring-water tin is another individual format for a meal using plain tuna. Read the can for its full ingredients and drained weight; compare any salt figure only when its measurement basis is clear.

View on Joybuy

Frequently asked questions

Is plain tinned tuna suitable for a low FODMAP diet?

Monash FODMAP identifies unflavoured canned fish such as tuna as an option. Check the complete ingredient list of the tin you buy, because a sauce, marinade or seasoning can introduce other ingredients.

Does tuna have to be packed in spring water?

The key FODMAP check is the full ingredient list, rather than treating one packing liquid as suitable for every shopper. The cited plain spring-water tins list tuna and water, sometimes with salt; assess any other tin by its own label.

Is a single tin always one serving?

No. Tesco lists 112g drained weight for its 160g spring-water tin and presents half a can as 56g; Sainsbury's describes its 145g tin as containing two servings. Use drained weight and your recipe to decide how much to open.

What should I do with tuna left after opening?

Follow the storage and use-by-opening instructions on that tin. The cited Sainsbury's product specifies one day for refrigerated leftovers, while the cited Tesco, Princes and M&S products specify two days.

Should I get support before following a low FODMAP diet?

The NHS says a dietitian may recommend a low FODMAP diet for IBS. Cambridge University Hospitals NHS Foundation Trust describes a temporary restriction phase followed by gradual reintroduction, so seek advice from a GP or dietitian if you are considering extensive dietary restriction.