Shoppers packing one bag at a time
Check the weight of each inner bag as well as the number of bags. A six-pack of individual portions is different from a single sharing bag, and individual bag weights vary.
Who is choosing?
Shoppers with allergen or dietary requirements
Read the ingredients, allergen declaration and suitability statements for the exact flavour before ordering or approving a substitute. These details can differ even within a brand’s range.
Shoppers comparing regular snack portions
Compare the salt stated for the bag you would eat, alongside its weight. NHS guidance says adults should have no more than 6g of salt a day.
What should you check?
Confirm the individual-bag format first; once the portion is clear, the nutrition and ingredient information becomes easier to compare.
| Priority | What to check | Your needs |
|---|---|---|
| Bag size | Find the net weight of each inner bag, the pack count and any serving statement. Do not use the outer pack’s total weight as the size of one portion. | I want one bag for a packed lunch, so I need to know whether each bag is 25g, 35g or another stated size. |
| Salt and energy | Read the per-bag figures where given and keep the bag weight beside them. Per-100g values alone do not describe the amount in a whole bag. | If I regularly eat a whole bag, I want to compare what that bag contains. Tyrrells lists 0.26g salt per 40g Lightly Sea Salted pack, Walkers lists 0.34g per 25g Ready Salted serving, and Seabrook lists 0.4g per 31.8g Sea Salted bag. |
| Ingredients and allergens | Check the exact flavour’s ingredients, declared allergens and precautionary wording. Recheck those details for any proposed substitute. | I need the product I receive to meet my dietary requirements; a plain flavour name or a suitability statement is not a substitute for reading its full allergen information. |
| Crisp style | Look for the maker’s description, such as hand-cooked or ridged, and confirm that the chosen pack is an individual-bag format. | For this order, I may prefer a stated ridged style or a sea-salt recipe, but I still need the right bag size and flavour. |
What can go wrong?
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Assuming every grab bag is the same size
Individual bags in the product examples range from 25g to 40g, so the same description can refer to different portions.
Check the weight of each inner bag and the serving statement before choosing a single bag or multipack.
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Comparing only the per-100g nutrition panel
Per-100g figures provide a common basis, but they do not tell you the salt or energy in a bag of a different weight.
Use per-bag figures when available. For salt, consider the bag alongside the rest of the day’s food; NHS guidance says adults should have no more than 6g daily.
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Assuming a plain flavour resolves allergen questions
Tyrrells says Lightly Sea Salted may contain milk, while Walkers lists several ingredients handled in the factory for Ready Salted. A statement about one flavour does not apply to every flavour in a range.
Check the exact product’s ingredients and precautionary wording, and apply the same check to a proposed substitute.
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Choosing a substitute by flavour alone
A different product can have a different inner-bag weight or allergen declaration, even when its flavour sounds similar.
Before approving a substitution, compare the individual-bag size and the exact product information that matters to your order.
Relevant brand references
Walkers
Ready Salted has a stated 25g serving; the Joybuy listing for its six-pack describes six individual 25g bags.
- Walkers lists 130 kcal and 0.34g salt per 25g Ready Salted serving.
- Its Ready Salted factory statement lists milk, wheat, gluten, barley, soya, celery and mustard as handled there. Check the exact flavour’s wording.
Tyrrells
Lightly Sea Salted is offered in a 40g pack that Tyrrells identifies as one serving.
- Tyrrells lists 208 kcal and 0.26g salt per 40g pack.
- The Lightly Sea Salted product states that it may contain milk.
KETTLE Chips
KETTLE describes its Lightly Salted product as gluten-free and suitable for vegans and vegetarians.
- The Lightly Salted ingredient list names potatoes, rapeseed and/or sunflower oil, and sea salt.
- If you need an individual portion, confirm the inner-bag weight on the exact retailer listing.
Seabrook
Sea Salted is listed in a 31.8g bag and described by Seabrook as gluten-free and suitable for vegetarians and vegans.
- Seabrook lists 0.4g salt per 31.8g Sea Salted bag.
- Do not extend that flavour’s dietary description to others: Seabrook’s Cheese & Onion ingredients include milk-derived lactose and cheese powder.
McCoy’s
McCoy’s describes its core crisp range as ridged.
- The ridged format offers a clearly identified style to look for in a product listing.
- Its Salted product has a may-contain statement covering milk, soya, gluten and mustard. Check the exact flavour and individual-bag weight.
REAL Hand Cooked Crisps
REAL identifies a 35g individual bag of Sea Salt alongside a 150g bag.
- Its Sea Salt ingredient list names potatoes, vegetable oils and sea salt; REAL describes the flavour as suitable for vegetarians and vegans.
- The stated 1.3g salt figure is per 100g, so check the exact listing for a per-bag figure if that determines your choice.
Individual-bag multipacks on Joybuy
These multipacks contain individually sized bags for adding several portions to an online grocery order. Check each flavour’s product information if ingredients, allergens or nutrition affect your choice.
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Walkers Oven Baked Variety Pack Crisps 6 x 22g
Six individual 22g bags offer a smaller stated bag size for packing one at a time. Check the ingredients and allergens for each flavour in the variety pack.
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Walkers Meaty Variety 20 x 25g
Twenty individual 25g bags provide several portions in one multipack. Check ingredients, allergens and salt for each included flavour rather than treating the assortment as one recipe.
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Walkers BBQ Crisps 6 x 25g
Six individual 25g bags suit an order where you want the stated BBQ flavour in separate portions. Read the exact product’s allergen and nutrition information before choosing it or accepting a substitute.
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Walkers Heinz Tomato Ketchup 6 x 25g
This multipack contains six individual 25g bags of the named flavour. Check its own ingredients and allergen statement; another Walkers flavour is not necessarily interchangeable.
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McCoy’s Ridge Cut Mighty Meaty 6 x 25g
Six individual 25g bags combine the stated ridge-cut style with a flavour assortment. Check each flavour separately for ingredients, allergen wording and nutrition.
Common questions
Is a “grab bag” always one serving?
No: the term does not establish a standard weight. Walkers Ready Salted lists a 25g serving, Seabrook Sea Salted a 31.8g bag, REAL Sea Salt a 35g bag and Tyrrells Lightly Sea Salted a 40g pack identified as one serving. Check the exact bag weight and serving statement.
Should I compare salt per 100g or per bag?
Use the per-bag amount to compare the portions you expect to eat, while keeping each bag’s weight in view; per-100g figures are useful for comparing the products on the same weight basis. Tyrrells lists 0.26g salt per 40g Lightly Sea Salted pack, Walkers 0.34g per 25g Ready Salted serving and Seabrook 0.4g per 31.8g Sea Salted bag. NHS guidance says adults should have no more than 6g of salt a day.
Can I assume plain or ready-salted crisps meet my allergy requirements?
No. Tyrrells says Lightly Sea Salted may contain milk, and Walkers Ready Salted has a factory statement naming several allergens. Check the ingredients and precautionary wording on the exact product and its current listing rather than relying on the flavour name.
How should I handle substitutions in an online grocery order?
Check a proposed substitute as a separate product before approving it. Its individual-bag size, salt per bag, ingredients, allergen wording or dietary-suitability statements may differ; if a requirement is essential, use the retailer’s substitution options accordingly.