Campers comparing salt
Compare the declared salt per 100g on the exact tins you are considering rather than assuming all plain chopped tomatoes have the same value.
Who needs to compare tins?
The useful comparison depends on whether salt, the planned meal or leftover storage is driving your choice.
People cooking a shared meal
If a pasta sauce, bean dish or stew will use a whole tin, choose its size around the meal and the number of people eating.
Label-led shoppers
Use per-100g figures to compare different pack sizes, then check how much tomato the recipe will use.
What matters when choosing tinned tomatoes?
Start with the per-100g salt declaration, then match the tomato format and tin size to a meal you can cook and store appropriately.
| Priority | What to check | Your needs |
|---|---|---|
| Salt | Compare salt per 100g on each exact product. Check the ingredient list separately if you want to know whether salt has been added. | I want to compare tins on the same basis before deciding which salt figure suits my meal. |
| Format and size | Choose chopped or plum tomatoes for the recipe you plan to make. Check the weight of each tin, particularly when buying a multipack. | A shared one-pot meal could use a whole 400g tin; for a smaller meal, I need to consider what would happen to the rest. |
| After opening | Read the tin’s storage instructions and establish whether you can transfer and refrigerate leftovers. | Without dependable chilled storage at the campsite, I would plan a meal that uses the full tin. |
What can go wrong when packing tomatoes?
-
Assuming every plain tin has the same salt value
Marks & Spencer declares 0.02g salt per 100g for its Chopped Italian Tomatoes, while Napolina declares 0.10g per 100g for its standard Chopped Tomatoes. The difference matters when salt is your main comparison.
Read the per-100g nutrition panel on the exact product rather than relying on words such as “plain” or “Italian”.
-
Packing a tin without a leftover plan
Marks & Spencer instructs shoppers to transfer leftovers from its Chopped Italian Tomatoes to a non-metallic container and refrigerate them. That is difficult to arrange at a campsite without reliable cooling.
Plan a meal that uses the full tin, or take an appropriate container only if you can also keep the leftovers chilled.
Unused tomatoes may have to be discarded if they cannot be stored as directed.
-
Using texture or packaging as a salt guide
A chunky or finely chopped texture tells you about the tomato base, not its salt declaration. Mutti’s Polpa page, for example, lists salt as an ingredient and declares 0.30g per 100g, although that page is not specific to a UK retail pack.
Choose the texture for your recipe, but compare salt using the nutrition panel on the tin you intend to buy.
What do the brand labels show?
These product and category references help frame a label comparison; they do not establish the salt value of every tin sold under each brand.
M&S
Marks & Spencer declares 0.02g salt per 100g for its Chopped Italian Tomatoes and 0.03g per 100g for its Organic Italian Chopped Tomatoes.
- Both named products have a stated per-100g salt figure for comparison.
- Their after-opening instructions differ: the standard product says to refrigerate and eat within three days; the organic product says within two days.
Napolina
Napolina describes its Chopped Italian Tomatoes as chunky and declares 0.10g salt per 100g for the standard product.
- The stated texture can help when choosing a base for a chunky sauce.
- Its declared salt figure is higher than that of the named M&S Chopped Italian Tomatoes on the same per-100g basis.
Mutti
Mutti describes Polpa as finely chopped tomatoes. Its manufacturer page lists salt as an ingredient and declares 0.30g salt per 100g.
- The finely chopped format offers a different texture from chunky chopped tomatoes.
- The manufacturer page is not specific to a UK retail pack, so use the tin’s own nutrition panel for a UK shopping comparison.
Tesco
Tesco Groceries lists own-brand Italian chopped and finely chopped tomatoes, including single-tin and multipack formats.
- The listed formats give shoppers different textures and pack sizes to consider.
- Compare salt using the nutrition panel of the particular Tesco product you choose, rather than treating the category listing as one salt value.
Joybuy tinned tomatoes for festival meals
These Joybuy options include chopped tomatoes in multipacks and a single tin of plum tomatoes. Consider how many tins you need to carry and whether each meal can use a full 400g tin.
No image available
Laila Canned Chopped Tomatoes, 12 × 400g
Each 400g tin can be planned around a separate camp meal. This is a 12-tin pack, so consider how many tins you need to carry; check the salt declaration on the tins when comparing products.
No image available
Napolina Chopped Tomatoes, 4 × 400g
Four separate 400g tins allow you to plan meals one tin at a time. Napolina declares 0.10g salt per 100g for its standard chopped tomatoes; check the pack’s label when making your comparison.
No image available
Laila Canned Plum Tomatoes, 400g
A single 400g tin may be easier to match to one planned meal than a multipack. Choose plum tomatoes if that format suits the dish, and read the tin’s per-100g salt declaration before comparing it with chopped options.
Questions about choosing and storing tins
How can I compare salt across different tins?
Use the declared salt per 100g for a like-for-like comparison, then consider how much of the tin the meal will use. Marks & Spencer declares 0.02g per 100g for its Chopped Italian Tomatoes, compared with Napolina’s 0.10g per 100g for its standard Chopped Tomatoes; check the exact pack when shopping.
Are plain chopped tomatoes automatically lower in salt?
No. Salt declarations differ between the named products: Marks & Spencer lists 0.02g per 100g for its Chopped Italian Tomatoes, while Napolina lists 0.10g per 100g for its standard Chopped Tomatoes. Compare nutrition panels instead of relying on the word “plain”.
What should I do with an opened tin at a festival?
Plan to use the whole tin if you cannot refrigerate leftovers. For its Chopped Italian Tomatoes, Marks & Spencer instructs shoppers to move opened contents to a non-metallic container, refrigerate them and eat them within three days; follow the instructions on the tin you bring.
Does the tomato tin’s salt matter if it is only one ingredient?
It contributes to the meal’s salt total, so check other ingredients as well when comparing recipes. The NHS advises adults to have no more than 6g of salt a day; labels on additions such as stock cubes or sauces can help you assess the meal beyond its tomato base.