Diners seeking a lighter hot lunch
Compare calories for the amount served, especially when a 400 g can displays nutrition for a 200 g half-can.
Who is choosing the soup?
Vegetarian lunch planners
Keep vegetarian tomato or lentil-and-vegetable soups distinct from chicken options, and check each product’s current ingredient and allergen declaration.
Canteen teams comparing salt
Check salt for the served portion rather than assuming a lower-calorie soup is also lower in salt. The NHS advises adults to have no more than 6 g of salt a day.
What should you compare?
Start with the portion the canteen will serve, then compare nutrition and dietary suitability on that same basis.
| Priority | What to check | Your needs |
|---|---|---|
| Served calories | Check the pack weight and whether kcal are stated per can, per 100 g or per half-can. Double half-can figures only when serving the whole can. | I want the figure for my actual lunch, not just the label’s serving. Tesco Groceries lists 61 kcal per 200 g serving for Tesco Low Fat Tomato Soup, making 122 kcal for its 400 g can. |
| Salt | Compare grams of salt per served portion as well as per 100 g. The NHS advises adults to have no more than 6 g a day. | I would check salt even on a lower-calorie option: Tesco Groceries lists 1.9 g in a 295 g can of Heinz Weight Watchers Chicken Soup. |
| Lunch portion | Check the amount served, the ingredient list and stated protein. Protein figures provide a comparison point, not a promise that a soup will keep someone full. | For lunch, I may prefer a soup with lentils and vegetables or chicken and vegetables rather than a smaller portion; the choice still needs to fit the diner’s dietary requirements. |
| Dietary suitability | Check the current vegetarian declaration, ingredients and named allergens. Keep allergen information tied to the exact product being served. | If I need a vegetarian option or must avoid an ingredient, I need the declaration for this can—not an assumption based on its flavour or another soup in the range. |
Canteen buying pitfalls
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Reading half-can calories as whole-can calories
Several 400 g soups state nutrition for a 200 g serving. Serving the entire can gives twice the stated half-can calories and salt.
Set the menu portion first, then use the nutrition figures for that weight.
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Checking calories but not salt
According to Tesco Groceries, Heinz Weight Watchers Chicken Soup has 92 kcal and 1.9 g salt per 295 g can. A calorie figure alone does not describe its salt content.
Compare salt across the complete portions you intend to serve, including any accompaniments.
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Treating vegetarian as an allergen declaration
Vegetarian suitability and allergen information answer different questions; a vegetarian soup can still contain ingredients a diner needs to avoid.
Check the exact can’s current ingredients and allergen declaration, and do not substitute a chicken soup for a vegetarian menu option.
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Relying on an older product listing
A changed recipe or pack can make earlier portion, ingredient or storage information unsuitable for the product being served.
Check the physical can or current supplier specification when approving the menu, including its storage instructions after opening.
Relevant brand references
Heinz
The Weight Watchers Chicken Soup and classic Cream of Tomato are different can sizes and should be compared by the portion served.
- Tesco Groceries lists 92 kcal for the entire 295 g Weight Watchers Chicken Soup can.
- That can also lists 1.9 g salt. Sainsbury’s lists 102 kcal per half-can for the separate 400 g Cream of Tomato product.
Tesco
Its 400 g Low Fat Tomato and Low Fat Lentil & Vegetable soups offer different tomato and lentil-and-vegetable choices.
- Tesco Groceries lists 61 kcal per 200 g serving for the tomato soup and 87 kcal per 200 g serving for the lentil-and-vegetable soup.
- Both figures are for half a can; compare the full-can figures if serving 400 g to one diner.
Sainsbury’s
Be Good To Yourself Tomato & Spicy Lentil Soup is a 400 g can with two stated servings.
- Sainsbury’s lists 98 kcal and 5.6 g protein per half-can serving.
- For a whole-can lunch, the stated calories become 196 kcal; check the current pack’s dietary and allergen declarations before service.
M&S
Chunky Chicken and Vegetable Soup is a chicken-containing alternative to the tomato and lentil options.
- Marks & Spencer lists 44 kcal and 3.5 g protein per 100 g, equivalent to 176 kcal and 14 g protein for a 400 g can.
- It is not a vegetarian option. Check its current ingredient and allergen information before adding it to a canteen menu.
Joybuy soup options
This Joybuy option is a 400 g bean soup to assess against the portion and ingredients planned for a workplace lunch.
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Suma Organic Tuscan Bean Soup 400 g
For a workplace lunch using this 400 g can, calculate nutrition for the amount served from the current pack label. Confirm its ingredient, allergen and vegetarian declarations before including it in a canteen menu.
Common questions
How do I compare calories when a soup label uses half a can?
Use the figures for the amount served. Tesco Groceries lists 61 kcal and 0.69 g salt per 200 g serving for Tesco Low Fat Tomato Soup; serving its whole 400 g can gives 122 kcal and 1.38 g salt.
Does a lower-calorie soup necessarily contain less salt?
No. Tesco Groceries lists Heinz Weight Watchers Chicken Soup at 92 kcal but 1.9 g salt per 295 g can. Check both figures for the portion being served rather than using calories as a guide to salt.
What should a canteen check for diners with allergies?
Check the exact soup’s current ingredients and allergen declaration, then provide accurate allergen information for the food served. Food Standards Agency guidance says retail and catering food businesses must provide allergen information for both prepacked and non-prepacked food and drink.
Must every UK workplace canteen display calories?
No UK-wide conclusion follows from the England-only rules. Department of Health and Social Care guidance says England’s out-of-home calorie-labelling regulations apply to food offered for sale by qualifying large businesses with 250 or more employees in that sector. Check the canteen’s operator, food service and nation before deciding whether those rules apply.