Choose chopped tomatoes labelled no added salt if you want to control the seasoning in a sauce, chilli or stew, but compare the salt figure per 100g as well as the ingredients. Biona lists 0.02g salt per 100g and Mr Organic lists 0.03g; tinned tomatoes are a meal base rather than its main protein ingredient, so choose a separate protein-rich food to go with them.
If you make sauces, curries, chilli or stews around a separate protein ingredient, a plain tomato base lets you decide how to season the finished dish. Cambridge University Hospitals NHS Foundation Trust identifies foods including meat, fish, eggs, dairy, pulses and tofu as protein-rich choices; the tomatoes play a different role in the meal.
If stock, cheese, cured meat or bottled sauce is also going into the pan, the tomato tin is one part of the dish’s salt total. The NHS advises adults to have no more than 6g of salt a day and recommends checking food labels when choosing lower-salt products.
A 400g tin may stretch across more than one meal. Check its instructions before opening it: the M&S product specifies refrigeration and use within two days after transfer to a non-metallic container, while Mr Organic specifies 72 hours.
Start with salt per 100g and the ingredients, then choose a tomato format and pack size that fit the meals you plan to cook.
| Priority | What to check | Your needs |
|---|---|---|
| Salt and ingredients | Compare salt per 100g, then check whether salt appears in the ingredients or the pack states no added salt. Biona lists 0.02g per 100g and Mr Organic 0.03g; Mutti lists added salt in Polpa and 0.30g per 100g. These are figures for those specific products. | I want to season a tomato sauce myself, especially when other ingredients already contribute salt. A no-added-salt statement helps, but I still want to see the numeric salt value. |
| Protein’s role | Read protein values per 100g without treating the tomato tin as the meal’s protein component. The Biona, Mr Organic, M&S, Tesco and Sainsbury’s products listed here each show 1.0g to 1.4g protein per 100g. | For a higher-protein meal, I’m choosing tomatoes for the sauce and adding a separate ingredient such as pulses, tofu, eggs, fish or meat. Cambridge University Hospitals NHS Foundation Trust identifies these as protein-rich foods. |
| Tomato format | Check whether the recipe calls for chopped tomatoes, fine pulp or whole plum tomatoes. Mutti describes Polpa as finely chopped; a whole-plum tin may need breaking up when a recipe expects chopped tomatoes. | I’d rather choose the texture the recipe needs than assume every tin will behave the same way in a quick sauce or stew. |
| Pack and leftovers | Match the number of tins to your cooking plans and read the opened-pack instructions. M&S says to transfer and refrigerate leftovers and eat them within two days; Mr Organic specifies 72 hours. | If one meal will not use the whole tin, I need a plan for the remainder before opening it. A multipack makes more sense when I expect to cook with tomatoes repeatedly. |
The Biona, Mr Organic, M&S, Tesco and Sainsbury’s products listed here contain 1.0g to 1.4g protein per 100g. Cambridge University Hospitals NHS Foundation Trust instead identifies foods such as pulses, tofu, fish, eggs and dairy as protein-rich choices.
Choose the tomatoes for the sauce, its salt figure and its texture; choose the meal’s protein ingredient separately.
Product figures differ: Biona lists 0.02g salt per 100g, while Mutti Polpa lists 0.30g per 100g and contains added salt.
Compare the current per-100g nutrition line and ingredients. If control over added seasoning matters, also look for an explicit no-added-salt statement.
Stock, cheese, cured meat and bottled sauces can also contribute salt. Choosing a tomato base with less salt does not establish the salt content of the complete meal.
Consider the other ingredients before adding salt, then season the finished dish to taste.
Opened-pack instructions differ: M&S specifies use within two days after transfer and refrigeration, whereas Mr Organic specifies 72 hours.
Transfer leftovers to a suitable container, refrigerate them and follow the instructions for the product you bought.
Opening more than a recipe needs can lead to food waste if the remainder is not used within that product’s stated period.
These figures describe particular tomato products, not every tin sold under each name; compare the label of the variant you choose.
A Joybuy listing for Napolina Chopped Tomatoes 400g describes tomatoes in tomato juice and lists 0.10g salt and 1.3g protein per 100g.
Mutti describes Polpa as finely chopped tomato pulp with added salt and lists 0.30g salt per 100g.
Tesco Italian Chopped Tomatoes 400g lists 0.09g salt and 1.4g protein per 100g.
Sainsbury’s Italian Chopped Tomatoes 4 × 400g lists 0.07g salt and 1.2g protein per 100g.
M&S Organic Italian Chopped Tomatoes 400g lists 0.03g salt and 1.3g protein per 100g.
These chopped and plum tomato tins offer single-can and multipack formats for sauces, stews and repeat cooking. For each one, check the current can’s salt per 100g and ingredients before deciding how it fits your meal.
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The 12-tin pack is an option if you expect to make chopped-tomato sauces or stews repeatedly.
Each tin is 400g. Check the current label for salt per 100g, ingredients and opened-tin instructions; use a separate protein-rich ingredient when building a higher-protein meal.
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A single 400g tin fits a recipe that calls for whole plum tomatoes without committing to a multipack.
Check the current salt figure and ingredients on the can. If the recipe needs chopped tomatoes, plan to break up the plum tomatoes during cooking.
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This 12-tin pack is more relevant when several planned meals use whole plum tomatoes.
Each tin is 400g. Check the current label’s salt value and opened-tin instructions, and choose a separate protein ingredient for the meal.
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Four chopped-tomato tins suit a run of recipes that call for a ready-chopped base.
Each tin is 400g. Check the salt per 100g and ingredients on this pack rather than applying figures from a different Napolina listing.
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This four-tin pack suits repeat cooking when a recipe calls for peeled plum tomatoes.
Each tin is 400g. Plum tomatoes may need breaking up for a chopped-tomato recipe; compare the current pack’s salt figure and ingredients before choosing it.
No: use the tomatoes as a sauce or vegetable base and choose a separate protein-rich ingredient. The Biona, Mr Organic, M&S, Tesco and Sainsbury’s products listed here contain 1.0g to 1.4g protein per 100g; Cambridge University Hospitals NHS Foundation Trust identifies foods including pulses, tofu, eggs, fish, meat and dairy as protein-rich choices.
No. Biona and Mr Organic state no added salt but list 0.02g and 0.03g salt per 100g respectively. Check both the ingredients and the numeric salt value per 100g when comparing tins; the NHS recommends using food labels to choose lower-salt products.
Follow the instructions on that product’s pack. M&S says to transfer the contents to a non-metallic container, refrigerate and eat them within two days; Mr Organic also specifies transfer and refrigeration but gives a 72-hour period. Do not assume those periods apply to every tin.