Shoppers comparing salt for an older adult
If tomato-based meals are made regularly, the salt declaration on the exact tin gives you a more useful comparison than its brand or appearance. Check flavoured varieties separately from plain tomatoes.
Who is this for?
Carers planning meals around poor appetite
For an older person following a dietitian-directed high-energy or high-protein plan, tomatoes can be a cooking ingredient, but the rest of the meal must still fit that plan. East Lancashire Hospitals NHS Trust advises including protein at meals in its guidance for people needing a high-energy, high-protein diet.
Shoppers following an individual kidney-diet plan
If the person has been advised to lower dietary potassium, do not choose tomato portions on salt content alone. Kidney Care UK advises considering the amount, frequency, form and accompaniments in line with individual renal-diet advice.
What should you check?
Compare the tin itself first, then consider the finished meal and any individual dietary instructions.
| Priority | What to check | Your needs |
|---|---|---|
| Salt declaration | Compare salt per 100g on current labels. Check the amount of tomato used and the salt contributed by other ingredients. | I make tomato-based meals often and want to compare tins on the same basis. Asda Groceries declares 0.01g per 100g when hob heated for Asda Chopped Tomatoes; M&S declares 0.02g per 100g for its Chopped Italian Tomatoes. These are product-specific figures. |
| Product variant | Check whether the tin contains chopped or whole plum tomatoes, and read the ingredients and nutrition panel for the exact plain or flavoured version. | For a sauce, I may prefer chopped tomatoes; for another recipe, whole plum tomatoes may suit the preparation. I would check a garlic, herb or chilli variant separately rather than assume it matches the plain tin. |
| Whole meal | Consider stock cubes, cheese, sauces and other additions when assessing salt. If a high-energy or high-protein meal plan applies, choose the other meal ingredients accordingly. | Keeping the tomato base lower in salt does not tell me what is in the finished meal. If I am cooking to an advised nutrition plan, I need the complete dish to fit it. |
| Kidney-diet advice | If potassium reduction has been advised, check the recommended tomato portion, frequency, form and accompaniments with the person’s renal-diet team. | Even a tin with a lower salt declaration cannot tell me whether a larger tomato portion fits an individual kidney diet. Kidney Care UK advises following the person’s specific dietary guidance. |
| Opened-tin storage | Read the exact tin’s instructions for transferring, refrigerating and using unused contents; instructions can differ between products. | If a recipe uses only part of a tin, I need to know how that product says to store the remainder. |
Common buying mistakes
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Assuming plain tins have the same salt content
The researched product declarations differ: Napolina lists 0.10g salt per 100g for plain Chopped Tomatoes, while Mutti lists 0.30g per 100g for its added-salt Polpa specification. Mutti’s figure comes from a manufacturer specification, so check the current UK pack before using it for a purchase decision.
Compare the current per-100g declaration on the exact tin, including any flavoured or multipack version.
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Judging the finished dish by the tomato tin alone
Stock cubes, cheese, cured meat, sauces or added salt can change the salt content of a sauce, soup or stew after the tomatoes go in.
Consider the ingredients used across the whole recipe rather than treating the tomato label as the meal’s total.
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Making salt the only dietary check
A lower-salt tomato choice does not by itself address an advised high-energy or high-protein meal plan. For someone instructed to lower potassium, Kidney Care UK also identifies tomato portion and frequency as relevant.
Use the tin as one ingredient within the person’s individual dietary guidance; ask their healthcare or dietetic team about prescribed restrictions.
Brand and retailer references
These details concern the named products or listed ranges, not every tin sold under each name.
Asda
Its 400g Chopped Tomatoes are a plain chopped-tomato option in concentrated tomato juice.
- Asda Groceries declares 0.01g salt per 100g when hob heated for this product.
- Check the current label rather than applying that figure to other Asda tins.
M&S
Its Chopped Italian Tomatoes are a 400g chopped-tomato product in tomato juice.
- M&S declares 0.02g salt per 100g for this product.
- M&S says product information can change, so use the current tin label.
Napolina
The researched plain Chopped Tomatoes are distinct from the brand’s flavoured tomato varieties.
- Napolina declares 0.10g salt per 100g for its plain Chopped Tomatoes specification.
- Check garlic, herb and chilli varieties individually; the plain product’s figure does not establish theirs.
Mutti
Polpa is the brand’s finely chopped tomato product.
- Mutti’s Polpa specification lists added salt and declares 0.30g salt per 100g.
- Confirm the ingredients and nutrition declaration on the UK pack before relying on the manufacturer’s specification.
Tesco
Tesco’s chopped-tomato range includes Italian chopped and finely chopped formats.
- The different formats give shoppers a choice of tomato texture.
- Use the exact product’s nutrition panel to compare salt; a category listing cannot establish a tin’s value.
Sainsbury’s
Its canned-tomato range includes plain chopped tomatoes and flavoured varieties.
- The listed formats include chopped tomatoes in juice and Italian chopped tomatoes.
- Read the exact tin’s salt declaration rather than applying one variety’s details to another.
Joybuy tomato options
These chopped and whole plum tomato multipacks are cooking-base options for the meals discussed here. Compare each current tin label for salt per 100g before choosing one for a lower-salt recipe.
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Laila Canned Chopped Tomatoes, 12 x 400g
Chopped tomatoes offer a base for sauces, soups or stews; this pack contains 12 x 400g tins. Check the current tin for its salt declaration and storage instructions.
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Laila Canned Plum Tomatoes, 12 x 400g
Choose the whole plum format when it suits how you prepare the sauce or stew; this pack contains 12 x 400g tins. Read the current nutrition panel before comparing its salt content with chopped options.
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Napolina Chopped Tomatoes, 4 x 400g
These plain chopped tomatoes come in a 4 x 400g pack for tomato-based cooking. Napolina declares 0.10g salt per 100g for its plain Chopped Tomatoes specification; confirm the value on the current tins.
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Napolina Peeled Plum Tomatoes, 4 x 400g
The peeled plum format offers whole tomatoes for sauces or stews in a 4 x 400g pack. Check this variant’s current salt per 100g rather than using the declaration for Napolina’s chopped tomatoes.
Frequently asked questions
How do I compare tinned tomatoes for salt?
Start with salt per 100g on the current label, then consider how much tomato the recipe uses. Asda Groceries declares 0.01g per 100g when hob heated for Asda Chopped Tomatoes, M&S declares 0.02g for its Chopped Italian Tomatoes and Napolina declares 0.10g for its plain Chopped Tomatoes. Check flavoured versions separately.
Is a lower-salt tomato sauce a complete meal for an older person?
A lower-salt tin is one ingredient, not a measure of the finished meal’s nutritional content. If the person has an advised high-energy or high-protein plan, choose the other meal ingredients in line with it; East Lancashire Hospitals NHS Trust’s guidance for that situation advises including protein at meals.
Can lower-salt tomatoes fit a prescribed low-potassium diet?
That depends on the person’s individual renal-diet advice, not the tin’s salt figure alone. Kidney Care UK advises considering tomato portion, frequency, form and accompaniments for people who have been told to lower potassium.
How should I store tomatoes left in an opened tin?
Follow the instructions for the exact product. Asda Groceries says to transfer unused Asda Chopped Tomatoes to a non-metallic container, refrigerate and use within four days; M&S gives a three-day refrigerated period for its Chopped Italian Tomatoes after transfer to a non-metallic container.