For a tomato component alongside pie and mash, choose a 400g chopped tin if you want visible pieces without breaking down whole tomatoes. Finely chopped tomatoes suit a more integrated sauce; whole plum tomatoes give you more control over the texture if you are willing to crush or blend them. Check how much your recipe needs and follow the after-opening instructions on the tin you buy.
A 400g tin gives you a defined quantity for a tomato side or sauce without committing to a multipack. ASDA and Sainsbury’s describe their 400g chopped tins as two servings; compare that with your recipe, and plan for any remainder.
The format matters if the tomato will be noticeable beside the mash. Napolina describes its chopped tomatoes as chunky, Mutti describes Polpa as thinly diced flesh in juice, and Napolina says its whole plum tomatoes are generally fleshier than chopped tomatoes.
Compare the same tin size and check the listing or shelf label where you intend to shop. Sainsbury’s marks its own-brand 400g chopped tin out of stock online, illustrating why a displayed listing alone does not settle what you can buy for tonight’s meal.
Start with the texture you want beside the pie, then check whether one tin covers your recipe and whether you can use any leftovers within that product’s instructions.
| Priority | What to check | Your needs |
|---|---|---|
| Sauce texture | Check whether the tin contains regular chopped, finely chopped or whole plum tomatoes. Napolina describes its chopped tomatoes as chunky; Mutti describes Polpa as thinly diced tomato flesh in juice. | I want visible tomato pieces beside the mash, or I would rather have finer pieces throughout the sauce. If I choose whole tomatoes, I can break them down while cooking. |
| Meal quantity | Compare the 400g tin with the quantity your recipe calls for. ASDA and Sainsbury’s label their 400g chopped tins as two servings, but that does not establish how much sauce your meal will need. | One tin may cover my tomato component; if the recipe calls for more, I need to adjust the quantity before shopping. |
| Shopping choice | Compare like-for-like tin sizes and check the current shelf label or local listing. A product shown online may not be available for your order or store. | I need a tin I can buy for pie and mash night, rather than basing the plan on a listing that is out of stock online. |
| Leftovers | Read the exact tin’s after-opening directions, including whether to transfer unused tomatoes to a non-metallic container. The stated refrigerated use periods differ across the ASDA, Sainsbury’s, M&S and Mutti products described here. | If I will use only part of the tin, I want a practical plan for refrigerating the remainder and using it within the pack’s stated period. |
Napolina describes its chopped tomatoes as chunky and its whole plum tomatoes as generally fleshier; Mutti describes Polpa as finely chopped. Whole tomatoes may need crushing or blending if you want a more integrated sauce.
Decide how much texture you want beside the mash before choosing the format. Allow time to break down whole tomatoes if that is the route you take.
Sainsbury’s marks its own-brand 400g chopped tomatoes out of stock online. A product listing does not establish availability for your particular shop.
Check the current listing or shelf at the retailer you will use, and keep another suitable tomato format in mind if your first choice is unavailable.
Product directions differ: Sainsbury’s states two days after opening, M&S three, ASDA four and Mutti Polpa five, with refrigeration specified. Several also direct you to transfer unused contents to a non-metallic container.
Follow the instructions on your own tin, transfer and refrigerate leftovers as directed, and note when you opened it.
GOV.UK distinguishes best-before dates, which concern quality, from use-by dates, which concern safety, and lists canned tomatoes among foods carrying a best-before date.
Check the pack date and storage directions. If a properly stored unopened tin is past its best-before date, assess its quality rather than treating the date alone as an instruction to discard it; do not ignore package damage or product-specific warnings.
These references show how particular 400g products differ; they are not a claim that every product from a brand has the same ingredients or storage directions.
ASDA lists a 400g plain chopped-tomato tin for shoppers who want a straightforward chopped format.
Sainsbury’s lists an own-brand 400g chopped-tomato tin.
Napolina describes its chopped tomatoes as chunky and its whole plum tomatoes as generally fleshier than chopped tomatoes.
Mutti Polpa is a 400g finely chopped format that the brand describes as thinly diced tomato flesh with juice.
M&S Food lists a 400g Italian chopped-tomato product containing chopped tomatoes, tomato juice and citric acid.
These 400g Joybuy tins cover chopped tomatoes and whole peeled plum tomatoes for a tomato sauce or side with pie and mash. Choose between them by the texture you want to cook with.
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A single 400g tin of plum tomatoes for a tomato component beside pie and mash. Choose whole tomatoes if you want to decide how much to crush or blend them during cooking; check the tin’s directions for any leftovers.
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This 400g peeled-tomato tin suits a sauce in which you are prepared to crush or blend whole tomatoes. Check your recipe for the quantity needed and follow this tin’s after-opening directions if any remains.
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A single 400g tin in chopped format for a tomato sauce or side when you want pieces without starting with whole tomatoes. Check the pack for serving and after-opening directions when planning your meal.
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This single 400g peeled plum-tomato tin is an option if you want to break down whole tomatoes for your sauce. Check how much your recipe calls for and read the pack’s instructions before storing leftovers.
It may be enough for a tomato component, but the amount depends on your recipe and how many people you are serving. ASDA and Sainsbury’s label their 400g chopped tins as two servings; use your planned sauce quantity, rather than that label alone, to decide whether to buy another tin.
Choose chopped tomatoes for visible pieces, finely chopped tomatoes for smaller pieces throughout the sauce, or whole plum tomatoes if you are willing to crush or blend them. Napolina describes its chopped format as chunky and its plum tomatoes as generally fleshier, while Mutti describes Polpa as thinly diced flesh in juice.
Follow the directions on the exact tin you buy. The listed refrigerated periods are two days for Sainsbury’s chopped tomatoes, three for M&S Italian chopped tomatoes, four for ASDA chopped tomatoes and five for Mutti Polpa; several products also require transfer to a non-metallic container.
A best-before date concerns quality rather than the safety meaning of a use-by date, according to GOV.UK, which specifically lists canned tomatoes as an example. If the tin has been stored properly, check its condition, the food’s quality and any product-specific instructions; do not ignore a damaged package.