Buy tinned tomatoes as a sauce base for protein-led meals, not as the main protein ingredient: the checked Tesco, Napolina, Mutti and M&S products list 1.0–1.3g protein per 100g. Choose chopped tomatoes when you want noticeable pieces, or a finely chopped product for a more even sauce; pair either with a separate protein food and check the pack’s nutrition and storage instructions.
If you keep tomatoes for sauces, curries or stews, treat them as the base and choose the meal’s protein ingredient separately. Cambridge University Hospitals NHS Foundation Trust identifies foods such as pulses, tofu, eggs, fish and meat as protein-rich options.
For bean, lentil or tofu dishes, the choice between chopped pieces and a finer tomato texture depends on the sauce you want to make.
Opened-life instructions matter if you do not use the whole tin. The checked Tesco and Napolina products specify two days after opening, while the checked M&S product specifies three days.
Choose the tomato texture for the recipe, then compare labels on the same per-100g basis and check what you will do with any leftovers.
| Priority | What to check | Your needs |
|---|---|---|
| Protein contribution | Compare protein per 100g, then consider how much tomato the recipe uses. The checked Tesco, Napolina and Mutti products list 1.0g, 1.3g and 1.2g per 100g respectively; these figures are not the protein total for a finished meal. | I want a tomato base for a meal built around another protein food, rather than relying on the tomatoes for most of its protein. |
| Sauce texture | Check whether the tin contains chopped pieces, finely chopped tomato or peeled tomatoes you can crush or blend. Mutti describes its finely chopped Polpa as suitable for longer cooking. | For a sauce with noticeable tomato pieces, I would choose chopped tomatoes. If I want a more even texture around beans or lentils, a finer format may suit the recipe. |
| Opened-tin storage | Read the exact product’s transfer, refrigeration and use-within instructions. The checked Tesco and Napolina chopped tomatoes specify two days after opening; the checked M&S product specifies three days. | When a recipe uses only part of a tin, I need to know how to store the remainder and when to use it. |
The checked Tesco, Napolina and Mutti tomato products list 1.0–1.3g protein per 100g. A tomato sauce does not, on its own, tell you how much protein the finished dish contains.
Choose a separate protein ingredient for the recipe, such as beans, lentils, tofu, eggs, fish or meat, and assess the complete meal rather than the sauce alone.
A per-serving figure and a per-100g figure measure different amounts of food, so they are not a like-for-like way to compare tins.
Compare protein, salt and fibre per 100g on the current labels, then consider the amount of each product your recipe uses.
The checked Tesco Everyday Value and Napolina chopped tomatoes specify use within two days after opening; the checked M&S chopped tomatoes specify three days.
Follow the instructions on your tin for transferring and refrigerating leftovers, and use them within that product’s stated period.
Napolina chopped tomatoes are offered in several pack formats for sauces where visible tomato pieces are wanted.
Mutti describes its finely chopped Polpa as having a consistent texture and being suitable for longer cooking.
The checked Tesco Everyday Value product is a 400g tin of chopped tomatoes in tomato juice.
The checked M&S Chopped Italian Tomatoes are a 400g product packed in tomato juice.
These chopped, finely chopped and peeled tomato options can serve as bases for meals with a separate protein ingredient. Choose by the texture and pack format your cooking calls for.
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A 12-tin pack of chopped tomatoes for recipes such as sauces, curries or stews. Plan the meal’s protein ingredient separately and check the tin’s instructions if you use only part of one.
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A four-tin chopped-tomato pack for sauces where you want tomato pieces. Tesco Groceries lists 1.3g protein per 100g for the checked product; its opened-content instructions specify refrigeration and use within two days. Add a separate protein ingredient for a protein-led meal.
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A four-tin finely chopped option for a more even tomato texture in sauces. Pair the tomato base with the protein ingredient your recipe calls for, and follow the pack’s storage instructions after opening.
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A single 400g tin of peeled tomatoes for a sauce in which you want to crush or blend the tomatoes yourself. Add a separate protein ingredient and check the tin’s directions for storing any leftovers.
Do not rely on them as the main protein ingredient. Tesco Groceries lists 1.0g protein per 100g for its checked Everyday Value chopped tomatoes and 1.3g for the checked Napolina product; Mutti lists 1.2g per 100g for Polpa. Use tomatoes as a base alongside a separate protein food.
Choose a separate protein food that suits the dish, such as pulses, tofu, eggs, fish, poultry or meat. Cambridge University Hospitals NHS Foundation Trust identifies these food groups as protein-rich; the tomatoes provide the sauce base rather than replacing them.
Follow the instructions on the specific tin. The checked Tesco Everyday Value and Napolina chopped tomatoes specify refrigeration and use within two days after opening, while the checked M&S product specifies refrigeration in a non-metallic container and use within three days.
Not necessarily. Oxford Health NHS Foundation Trust advises people with renal disease, or those told to limit protein, to consult their dietitian or doctor before following a high-protein diet.