Lunch cooks watching the salt in a recipe
If tomatoes form the base of a soup, pasta sauce or bean dish, the tin’s salt figure is one part of the finished lunch. Check it alongside stock, cheese, sauces and other ingredients you plan to add.
Who is this for?
Weekday meal preppers
Standard chopped tomatoes leave more visible pieces, while a finely chopped format suits a less chunky base. Decide which texture works for the dishes you make most often.
Shoppers comparing labels
An Italian-origin description or a prominent salt claim does not give you a like-for-like comparison. The per-100g nutrition figures let you compare tins with different pack sizes.
What should you check?
Start with salt per 100g, then check the amount you will use and whether the tomato texture fits the meal. The tin’s current label is the reference for ingredients and storage instructions.
| Priority | What to check | Your needs |
|---|---|---|
| Salt level | Compare salt per 100g across tins. The NHS low-salt benchmark is 0.3g or less per 100g; check how much tomato the recipe uses as well. | I want to account for salt in the tomato base before adding ingredients such as stock, cheese or olives. |
| Pack quantity | Check the tin size and, for a multipack, the number of tins. Work out whether the amount suits your planned meals and storage space. | A single tin suits the lunch I have planned; if I cook with tomatoes regularly, I may prefer several tins. |
| Texture | Check whether the label says chopped or finely chopped. Choose based on whether you want visible pieces or a less chunky tomato base. | For a smoother pasta sauce I would look at finely chopped tomatoes; for a dish where pieces are welcome, standard chopped works. |
| Ingredients | Read the current ingredients list, including any salt or acidity regulator, and check the pack for allergen information relevant to you. | I want to know what is in this particular tin rather than assuming every chopped-tomato recipe is the same. |
| Front-of-pack label | If a traffic-light panel is present, use it alongside the per-100g nutrition declaration, not instead of it. | A front-of-pack panel can prompt me to look more closely at salt. In the Food Standards Agency and Ipsos Northern Ireland’s 2024 Making Food Better Tracker Survey, 49% of 611 people interviewed in Northern Ireland said they actively used traffic-light labels when shopping for food generally; that figure is not specific to tinned tomatoes. |
| After opening | Read the tin’s instructions for transferring, refrigerating and using leftovers; directions can differ between products. | If I will use only part of a tin at lunch, I need to know how its label says to store the remainder. |
Common buying mistakes
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Taking an origin or packaging description as proof of less salt
Product listings show different salt figures even among chopped tomatoes: M&S lists 0.02g per 100g for its Chopped Italian Tomatoes, while Tesco lists 0.13g for Heinz Finely Chopped Tomatoes.
Compare the current tins’ per-100g figures. The NHS defines low salt as 0.3g or less per 100g.
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Judging the whole lunch by the tomato tin
Stock cubes, cheese, cured meat and other additions can contribute salt to a dish even when the tomato base meets the NHS low-salt benchmark.
Check the labels of the ingredients you add and consider seasoning once the dish is assembled.
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Relying on an old product listing
The tin being purchased is the useful reference when its ingredients or nutrition information matter to your choice.
Read its salt declaration, ingredients and any relevant allergen information before using it.
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Putting an opened tin away without checking its instructions
Storage directions are product-specific. M&S says its Chopped Italian Tomatoes should be moved to a non-metallic container, refrigerated and eaten within three days of opening.
Follow the instructions on your tin for its container, refrigeration and use-within period.
Brand and product-line references
These examples illustrate how salt figures and tomato formats can differ between named products; the figures refer to the specified listings, not every tin from each brand.
M&S
M&S Chopped Italian Tomatoes are a standard chopped option for comparing salt per 100g.
- The M&S listing gives 0.02g salt per 100g for this product.
- Check the current tin and its storage instructions if you will use only part of it.
Tesco
Tesco’s Italian Chopped Tomatoes and its Grower's Harvest Chopped Tomatoes offer two own-label figures to compare.
- Tesco Groceries lists 0.09g salt per 100g for Tesco Italian Chopped Tomatoes and 0.07g for Grower's Harvest Chopped Tomatoes.
- Use the current pack’s declaration when choosing between them.
Napolina
Napolina Chopped Tomatoes are a standard chopped format for sauces, soups and similar dishes.
- Tesco Groceries lists 0.10g salt per 100g for the 400g product.
- Compare that figure with other tins if reducing salt from the tomato base is your main criterion.
Heinz
Heinz Finely Chopped Tomatoes offer a less chunky format for a tomato-based lunch sauce.
- Tesco Groceries lists 0.13g salt per 100g for the 400g finely chopped product, within the NHS low-salt benchmark.
- Its finely chopped texture is a separate choice from seeking the lowest salt figure among these named examples.
Joybuy tinned tomato options
These Joybuy options include standard and finely chopped tomatoes in single tins and multipacks. Compare the current pack’s salt declaration with the amount and texture you need for lunch.
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Laila Canned Chopped Tomatoes 12 x 400g
A chopped-tomato option for lunches made with a tomato base. This is a 12 x 400g multipack; check that the quantity suits your plans, and compare salt per 100g on the current tins.
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Napolina Chopped Tomatoes 4 x 400g
Standard chopped tomatoes for a lunch where visible tomato pieces suit the dish. The pack contains four 400g tins; compare the current salt declaration and follow the tin’s directions for any leftovers.
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Napolina Chopped Tomatoes 6 x 400g
The standard chopped format may suit soups or sauces where tomato pieces are welcome. This variant contains six 400g tins, so consider how many meals you plan to make; check the current nutrition and storage directions on each tin.
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KTC Chopped Tomatoes 400g
A single 400g tin is an option when you do not need a multipack. For a salt-conscious lunch, check its current per-100g figure and the pack’s instructions if you will keep any leftovers.
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Mutti Finely Chopped Tomatoes 4 x 400g
Consider the finely chopped format when you want a less chunky tomato base. The pack contains four 400g tins; compare the current salt figure and ingredients with other options rather than choosing by texture alone.
Questions about choosing and using tins
What counts as low salt for tinned tomatoes?
The NHS defines a food as low in salt when it contains 0.3g salt or less per 100g. Use the current tin’s per-100g declaration to compare products on the same basis.
Does the tin need to say ‘reduced salt’?
No: compare the salt figure per 100g whether or not there is a prominent salt claim. The named M&S, Tesco, Grower's Harvest, Napolina and Heinz chopped-tomato listings each give a figure at or below the NHS low-salt benchmark, according to M&S and Tesco Groceries.
Should I use salt per portion or per 100g?
Use salt per 100g to compare tins, then consider how much tomato will go into your lunch. A per-portion figure may be useful for that second step, but portions can differ between labels and recipes.
How should I store tomatoes left after opening?
Follow the instructions on the particular tin. For example, M&S says to move leftover Chopped Italian Tomatoes to a non-metallic container, refrigerate them and eat them within three days of opening; do not assume another product gives the same period.