Picnic lunch packers comparing whole bags
If you plan to eat one bag with lunch, the calories for that complete bag matter more immediately than a general claim on the front of the packet.
Who is this for?
Shoppers choosing between multipacks and sharing bags
Individual bags set out a portion in advance. With a sharing bag, check the stated serving size and decide how much to pack separately.
Groups with different dietary requirements
When several people will share the food, check the ingredients, allergen statements and dietary labelling on each exact flavour rather than relying on the brand name.
What should you check?
Start with the amount you intend to eat, then use the nutrition panel and ingredients list to compare packs that might otherwise look similar.
| Priority | What to check | Your needs |
|---|---|---|
| Calories per portion | Read the kcal figure for the whole bag or stated serving. Check its weight, then compare kcal per 100g when bag sizes differ. | I am packing one serving with lunch and want to know the calories in the amount I will eat, not just the figure printed for 100g. |
| Pack format | Check whether the product contains separate bags or is one sharing bag. For a sharing bag, compare your intended portion with the labelled serving size. | A separate bag is convenient to put in a lunchbox; if we are sharing, I would rather work out the portions before the picnic. |
| Fat and salt | Compare the labelled fat and salt per 100g and, where shown, per serving. Do not treat “baked” or a flavour name as a nutrition figure. | I want to consider salt and fat alongside calories when deciding between flavours and pack sizes. |
| Ingredients and allergens | Read the exact flavour’s ingredients, highlighted allergens and any “may contain” statement. Check explicit vegetarian, vegan or gluten-free labelling where relevant. | Someone sharing our picnic may have a dietary requirement, so I need to check the packet we will actually serve. |
What is easy to overlook?
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Comparing bag calories without noticing bag weight
Walkers UK lists 96 kcal for a 22g Oven Baked Sea Salt bag; Seabrook Crisps lists 126 kcal for its 25g LEA & PERRINS and Canadian Ham bags. The pack figures describe different amounts of food.
Compare the bag you expect to eat first, then check its weight and kcal per 100g before attributing the difference to the recipe.
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Choosing on calories alone
Salt can differ even between bags with the same calories: Seabrook Crisps lists 1.26g salt per 100g for LEA & PERRINS and 1.4g per 100g for Canadian Ham.
Check salt and fat on the exact packets you are comparing, using the same per-100g or per-serving basis.
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Assuming a brand name settles dietary suitability
Ingredients and allergen notices can vary by flavour. A vegetarian statement does not, by itself, establish that a product is vegan or gluten-free.
Read the physical packet for every flavour you intend to pack or share, including any precautionary allergen statement.
Relevant brand references
These product examples show why the exact variety and bag size matter; they are not a ranking of entire brands.
Walkers
Its Oven Baked range includes individually portioned potato-based crisps.
- Walkers UK lists 96 kcal and 2.8g fat per 22g pack of Oven Baked Sea Salt.
- Check the nutrition and allergen information for the particular flavour in your picnic bag; the Sea Salt figures do not describe every variety.
Seabrook
Offers conventional potato-crisp flavours in different individual bag sizes.
- Seabrook Crisps lists 126 kcal per 25g bag for both LEA & PERRINS and Canadian Ham.
- Its Sea Salted product is a different size: Seabrook Crisps lists 164 kcal per 31.8g bag.
Tyrrells
A reference for hand-cooked potato crisps when comparing texture, flavour and portion size.
- Tyrrells lists 208 kcal for a 40g pack of Lightly Sea Salted potato crisps.
- Compare that 40g pack with smaller individual bags by both whole-pack kcal and pack weight. Tyrrells lentil crisps are a different product type.
KETTLE
Its Sour Cream & Sweet Onion crisps provide a sharing-format example.
- KETTLE Chips lists 507 kcal per 100g for this variety and identifies it as gluten-free and suitable for vegetarians.
- Work out the amount you intend to serve from a sharing pack and check its ingredients for guests with dietary requirements.
Pipers
An option to compare when flavour preference is part of the picnic choice.
- Pipers Crisps lists 532 kcal per 100g for Anglesey Sea Salt.
- Use the size of the portion you will eat to assess its place in lunch; the per-100g figure is not a whole-bag figure.
REAL Crisps
A hand-cooked crisp range with product-specific nutrition to compare.
- REAL Hand Cooked Crisps lists 495 kcal per 100g for Sea Salt & Black Pepper.
- REAL describes its range as vegetarian and gluten-free; still check the exact packet and its ingredients before serving guests.
Joybuy picnic options
These options include two Walkers Oven Baked multipacks with separate 22g bags and one PopChips 85g sharing bag. Choose between a ready-packed portion and a bag you plan to divide, then check the exact flavour’s label.
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Walkers Oven Baked Variety Pack Crisps 6 x 22g
Six separate 22g bags let you pack one portion for a picnic lunch. Check the chosen flavour’s nutrition panel and allergen information rather than applying the Sea Salt figures to the whole variety pack.
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Walkers Oven Baked Cheese & Onion Crisps 6 x 22g
This single-flavour multipack contains six 22g bags, so one bag can be packed with each lunch. Read the Cheese & Onion packet for its own calories, ingredients and allergen notices.
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PopChips Sour Cream & Onion 85g
This 85g sharing bag needs dividing if you want to pack a single serving rather than take the whole bag. Check the packet’s serving size, nutrition panel and allergen information before sharing.
Common questions
How do I compare crisp bags of different sizes?
Compare kcal for the whole bag you intend to eat, then check bag weight and kcal per 100g. As the NHS explains in its food-label guidance, nutrition information is given per 100g and may also be shown per portion; using both figures helps distinguish a smaller bag from a different nutrition profile.
Are baked crisps always lower in calories per bag?
No conclusion about every baked crisp follows from the cooking description. Walkers UK lists 96 kcal for a 22g Oven Baked Sea Salt bag, compared with the 126 kcal that Seabrook Crisps lists for each of its 25g LEA & PERRINS and Canadian Ham bags; check the exact products and weights when making your own comparison.
Do I need to check allergens on a plain-sounding flavour?
Yes. Read the exact packet’s ingredients and any “may contain” notice, regardless of the flavour name. GOV.UK guidance says that prepacked food containing any of the 14 regulated allergens must clearly label them in the ingredients list.
Does vegetarian or vegan labelling mean crisps are gluten-free?
No; check gluten-free labelling separately on the exact product. Seabrook Crisps identifies its Sea Salted variety as gluten-free and suitable for vegetarians and vegans, but those statements should not be assumed for another flavour or brand.