People cooking tomato-based meals
If tinned tomatoes form the base of your sauce, soup, curry or casserole, compare the tin alongside the sugar, oil, cheese or cream you plan to add to the recipe.
Who is this for?
Shoppers puzzled by the sugars figure
The nutrition panel reports total sugars, not a separate figure for added sugar. The NHS says sugars naturally present in vegetables are included in that total but are not free sugars.
Shoppers comparing plain tins
If you are choosing between supermarket own-label tomatoes, compare the exact products’ ingredients and per-100g nutrition rather than assuming every tin in a range has the same values.
What should you check?
Begin with the ingredients, compare similar tins on a per-100g basis, then consider how much you will use and what goes into the meal.
| Priority | What to check | Your needs |
|---|---|---|
| Sugars and ingredients | Compare total sugars per 100g between similar plain tins. Read the ingredient list for sugar or other sweetening ingredients; the sugars figure alone cannot identify their source. | I want to know whether a sweetening ingredient is listed, rather than treating every gram of tomato sugar as added sugar. The NHS distinguishes naturally occurring vegetable sugars from free sugars. |
| Energy and the recipe | Compare declared energy per 100g and the amount of tomato you will use. Account separately for additions such as oil, cheese, cream or sugar. | For a tomato-based meal, I need to consider the finished recipe, not select the tin by its sugars figure alone. |
| Like-for-like labels | Check the exact product name and current per-100g panel. The listed M&S Italian Tomatoes have 2.5g sugars and 20kcal per 100g; Tesco Italian Chopped Tomatoes list 4.0g and 25kcal per 100g, according to their respective product pages. | If two plain tins suit my recipe, I can compare their declared figures on the same basis without assuming the lower-sugars tin has less free sugar. |
| Pack and storage | Choose a pack quantity you can use, then follow that tin’s instructions after opening. M&S Chopped Italian Tomatoes specify three days refrigerated; ASDA Chopped Tomatoes specify four days. | When I only need part of a tin, the pack’s storage period matters as much as the number of tins I buy. |
| Tomato texture | Decide whether peeled or finely chopped tomatoes suit the dish. Mutti describes its Polpa as finely chopped tomato pulp with juice for sauces, stews and soups. | For a sauce, I may prefer finely chopped tomatoes; for another recipe, I may want to work with peeled tomatoes. Texture is a separate choice from the sugars figure. |
Common buying mistakes
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Reading total sugars as added sugar
A plain tomato tin can show sugars on its nutrition panel even when its ingredient list does not name sugar. The NHS says naturally occurring sugars in vegetables are included in total sugars but are not free sugars.
Use the per-100g figure to compare similar products, then read the ingredients to check for sweetening ingredients.
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Adding sugar before tasting the cooked sauce
Added sugar changes the finished recipe, so the tin’s nutrition figures no longer describe the whole dish.
If acidity is the concern, try cooking the sauce before deciding whether it needs anything else. Napolina’s cooking guidance suggests slow cooking or ingredients such as onion or carrot instead of automatically adding sugar.
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Choosing by sugars alone
The listed plain tins differ in both sugars and energy per 100g. Ingredients added during cooking also affect the finished meal.
Compare energy and sugars on the same per-100g basis, then consider the portions and other ingredients in your recipe.
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Using one storage rule for every tin
Post-opening instructions differ: M&S Chopped Italian Tomatoes specify three days refrigerated, while ASDA Chopped Tomatoes specify four days.
Check the pack, transfer leftovers to a suitable non-metallic container as directed, and use them within that product’s stated period.
Brand and product-line references
These examples describe particular tomato products, not every tin made by each brand or products necessarily included in the Joybuy selection below.
M&S
Two separately listed Italian tomato products illustrate why the exact tin matters.
- M&S Italian Tomatoes list 2.5g sugars and 20kcal per 100g.
- M&S Chopped Italian Tomatoes instead list 3.8g sugars and 25kcal per 100g; do not transfer one product’s figures to the other.
ASDA
ASDA Chopped Tomatoes is a listed 400g plain-tomato option.
- Its product page lists tomatoes, concentrated tomato juice and citric acid, with 3.8g sugars and 22kcal per 100g.
- For leftovers, the page directs shoppers to refrigerate transferred contents and use them within four days.
Tesco
Tesco lists both Italian Chopped Tomatoes and Grower's Harvest Chopped Tomatoes.
- Tesco Italian Chopped Tomatoes list 4.0g sugars and 25kcal per 100g; Grower's Harvest lists 3.8g and 22kcal per 100g.
- Use the panel for the product you are buying rather than treating these as interchangeable label values.
Napolina
Napolina lists chopped tomatoes in single-tin and multipack formats.
- The brand’s plain chopped-tomato product page declares 3.6g sugars and 23kcal per 100g.
- Check the ingredients and nutrition of the exact variant rather than applying the plain product’s figures to a flavoured tin.
Mutti
Mutti describes Polpa as finely chopped tomato pulp with juice for sauces, stews and soups.
- The finely chopped format offers a texture choice for those dishes.
- Compare the exact tin’s nutrition panel if its sugars or energy will determine your choice.
Sainsbury's
Sainsbury's lists a 400g can of chopped tomatoes.
- It is another plain chopped-tomato listing to consider for a recipe.
- Sainsbury's advises reading the current label because products and ingredients can change.
Tinned tomato options on Joybuy
These peeled and chopped tomato tins include single tins and multipacks for tomato-based cooking. Compare each exact pack’s current ingredients and nutrition panel when choosing for your recipe.
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Mutti Peeled Tomatoes 400g
A single 400g tin of peeled tomatoes is an option when a recipe calls for that format. Check the current pack’s sugars and energy per 100g alongside its ingredients.
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Napolina Chopped Tomatoes 4 x 400g
Four 400g tins offer separate tins for several meals. Napolina’s plain chopped-tomato product page lists 3.6g sugars and 23kcal per 100g; confirm the figures and storage instructions on the pack you receive.
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Mutti Finely Chopped Tomatoes 4 x 400g
This four-tin pack is a finely chopped option for dishes such as sauces, stews and soups, uses Mutti identifies for Polpa. Compare the exact pack’s sugars, energy, salt and ingredients if those details affect your choice.
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Mutti Peeled Tomatoes 4 x 400g
Four 400g tins provide a peeled-tomato format for cooking across several meals. Check the current pack for nutrition, ingredients and allergen information before use, particularly if allergens matter to you.
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Laila Canned Chopped Tomatoes 12 x 400g
Twelve 400g cans are a larger chopped-tomato pack for regular cooking. Consider whether you will use that quantity, and check each can’s current nutrition and post-opening instructions.
Frequently asked questions
Does sugar on a plain tomato tin mean sugar was added?
No. The figure shows total sugars, including sugars naturally present in tomatoes; the NHS says naturally occurring sugars in vegetables are not free sugars. Read the ingredient list to check whether a sweetening ingredient is declared.
What does the NHS mean by low sugar on a food label?
NHS food-label guidance describes 5g or less of total sugars per 100g as low in sugar. That figure concerns total sugars, so it does not tell you on its own whether a sweetening ingredient was added or describe the finished recipe.
Which of the compared plain tins lists the least total sugar?
Of the M&S, Napolina, ASDA and Tesco plain products compared here, M&S Italian Tomatoes list the lowest declared figure at 2.5g sugars per 100g, according to the respective product pages. That limited label comparison does not establish which tin contains the least free sugar or which suits every recipe.
How long can I keep tomatoes after opening a tin?
Follow the instructions on the particular tin. M&S Chopped Italian Tomatoes specify transferring leftovers to a non-metallic container, refrigerating and using within three days; ASDA Chopped Tomatoes specify a suitable non-metallic container, refrigeration and use within four days.