If keeping salt down is the main priority for a warming pasta dinner, start with tinned tomatoes you can season yourself rather than assuming a lighter or low-fat jar contains less salt. ASDA Groceries lists 0.01g salt per 100g for its plain chopped tomatoes and 0.58g per 100g for its spicy prepared pasta sauce. A tin takes more preparation, and the salt in the finished meal also depends on what else you add.
If you want to control how much salt goes into a winter pasta sauce, a plain or lightly flavoured tomato tin lets you add your own seasoning. Compare the exact tin: ASDA Groceries lists 0.01g salt per 100g for plain chopped tomatoes and 0.10g per 100g for its herb version.
A prepared jar reduces sauce preparation, but its salt figure needs a separate look. The lighter and low-fat wording on the checked Sainsbury’s and Dolmio sauces does not describe their salt content.
If a particular flavour, vegan or gluten-free suitability, or allergen information affects your choice, read those details and the salt figure on the exact product. A dietary description does not establish that a sauce is low in salt.
For a like-for-like comparison between tins and jars, start with salt per 100g. The NHS describes 0.3g salt or less per 100g as low salt; then consider how much of the product will go into your meal.
| Concern | What to check | Who this matters to |
|---|---|---|
| Salt in the tomato base | Compare salt per 100g, then the quantity you plan to use. | If I want to season a winter pasta sauce myself, I need to know what the tomato base contributes before adding anything else. About 50% of consumers put control of the base’s salt first. |
| Preparation time | Check whether the product is a finished sauce or a base that needs cooking and seasoning. | When dinner needs to be quick, I may prefer a prepared sauce even while comparing its salt label. For about 30% of consumers, getting a ready-seasoned sauce is the primary need. |
| Flavour and dietary fit | Read the exact product’s ingredients, allergen information and dietary statements. | If a particular flavour or dietary requirement decides which sauce I can use, I need to check it alongside salt. Roughly 20% of consumers put that fit first. |
Those descriptions concern a different attribute. Sainsbury’s lists 0.64g salt per 100g for its Lighter Tomato & Herb Bolognese Sauce, while Tesco Groceries lists 0.67g per 100g for Dolmio Low Fat Bolognese.
Read the salt figure per 100g rather than choosing by the front-of-pack wording alone.
Jar and tin portions can differ, so their per-serving salt figures may not describe the same quantity of food.
Compare per 100g first, then work out the salt in the amount you will actually use.
Salt added to pasta water or through stock, cheese, cured meat and toppings can change the finished dish even when its tomato base is low in salt.
Account for those additions separately. The NHS suggests herbs, spices, garlic, chilli or lemon juice as ways to add flavour instead of extra salt.
ASDA Groceries lists 0.01g salt per 100g for its plain chopped tomatoes but 0.58g per 100g for its Spicy Tomato Pasta Sauce.
Check the nutrition panel for the exact product and flavour you are buying.
Its checked range includes plain and herb-flavoured tomato tins as well as prepared pasta sauce.
Its checked Tomato & Basil Pasta Sauce is a prepared option marked vegan and vegetarian.
Its checked Lighter Tomato & Herb Bolognese Sauce is a prepared-sauce option.
The checked Low Fat Bolognese is a ready-made tomato pasta sauce.
The checked Basilico is a ready-made tomato-and-basil sauce.
Its checked listings include prepared sauces from Dolmio and Barilla.
These are tomato bases for making a pasta sauce yourself: chopped tomatoes and an onion-and-garlic passata, rather than finished jarred pasta sauces.
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For a tomato base you want to season yourself, Joybuy lists 0.09g salt per 100g for this tin, within the NHS low-salt guide of 0.3g or less per 100g. These are chopped tomatoes rather than a finished sauce, so allow time to cook and season them. Check the pack for storage instructions.
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Choose this tomato base if you want onion and garlic in the passata rather than starting with plain chopped tomatoes. Check the current pack’s salt per 100g against your chosen limit, and account for any salt added elsewhere in the meal.
The NHS guide defines low salt as 0.3g salt or less per 100g. Use that figure to compare a tin with a jar, then check how much you will use.
None of the checked prepared sauces meets the NHS low-salt guide of 0.3g or less per 100g. ASDA Groceries lists 0.58g per 100g for its Spicy Tomato Pasta Sauce, while Tesco Groceries lists 0.90g per 100g for Barilla Basilico; compare the exact jar you intend to buy.
Among the checked tins, ASDA Chopped Tomatoes has the lowest listed salt figure at 0.01g per 100g, according to ASDA Groceries. It still needs to be turned into a sauce, and other ingredients can add salt to the finished meal.
No: those terms do not establish a lower salt content. Sainsbury’s Lighter Tomato & Herb Bolognese Sauce lists 0.64g salt per 100g, and Tesco Groceries lists 0.67g per 100g for Dolmio Low Fat Bolognese.
Read the exact pack’s allergen information and storage instructions before buying or opening it. Marks & Spencer marks its checked Tomato & Basil Pasta Sauce as unsuitable for people with a milk or egg allergy; do not assume another sauce has the same ingredients or instructions.