Hosts serving a mixed group
Four 1-litre cartons provide 4 litres for a party needing roughly six UK pints. You can open cartons as needed and choose the sweetness level to suit the drinks and food being served.
Who is this for?
Hosts serving vegan or dairy-free guests
Soya drink is plant-based, but soya is itself an allergen. Check each guest’s requirements and the current carton’s ingredients, allergen declaration and precautionary warnings before serving it.
Hosts comparing nutrient labels
If added calcium, iodine or vitamins matter to your choice, compare the exact cartons. Fortification differs between products, and the UK Government’s SACN/COT summary says plant-based drinks labelled organic in the UK cannot be nutrient-fortified.
What should you check before buying?
Start with the volume: four separate 1-litre cartons cover approximately 3.41 litres, while allowing you to open only what guests are likely to use.
| Priority | What to check | Your needs |
|---|---|---|
| Sweetness and use | Compare sugars on the same per-100g or per-100ml basis. Marks & Spencer lists 0.4g per 100g for its unsweetened carton and 2.0g per 100g for its sweetened Plant Kitchen carton; those figures use the same basis. | I want a less sweet carton for varied uses, or a sweeter-tasting drink for a specific part of the party menu. |
| Fortification | Read the nutrient and ingredient panels for the exact product. Marks & Spencer lists added calcium, iodine, vitamin D and vitamin B12 in its researched soya drinks. The UK Government’s SACN/COT summary says plant-based drinks labelled organic in the UK cannot be fortified with nutrients. | If added nutrients matter to my choice, I will check the carton rather than assume every soya drink has the same ingredients. |
| Allergens | Check the current pack’s soya declaration and any other suitability or precautionary warnings. The researched Marks & Spencer cartons say they are not suitable for people with nut or peanut allergy. | Guests with known allergies need a drink that fits their requirements; a dairy-free label alone does not settle that question. |
| Carton size and storage | Confirm the number and size of cartons in the listing. Follow each pack’s instructions after opening: the researched Marks & Spencer cartons state three days refrigerated, while the researched Alpro long-life cartons state five days refrigerated. | I would rather open cartons as they are needed and keep any unopened long-life cartons according to their pack instructions. |
Party-planning mistakes to avoid
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Assuming organic means fortified
An organic soya drink may not provide the added nutrients expected from another carton. The UK Government’s SACN/COT summary says plant-based drinks labelled organic in the UK cannot be fortified with nutrients.
If fortification matters to your choice, check the ingredient and nutrient panels and select a carton that explicitly lists the additions you want.
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Treating dairy-free as suitable for every allergy
Soya is an allergen, and packs can carry further warnings. The researched Marks & Spencer soya drinks state that they are not suitable for people with nut or peanut allergy.
Ask guests about known allergies, check the current physical pack and arrange another drink where soya or a pack-specific warning rules a carton out.
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Opening all four cartons at once
Opened-carton instructions differ: the researched Marks & Spencer products state three days refrigerated, while the researched Alpro long-life products state five days refrigerated.
Open one or two cartons first, then open more if needed. Follow the storage and use instructions on each pack.
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Choosing by sweetness wording alone
Sweetened and unsweetened cartons can have different labelled sugar figures. Marks & Spencer lists 2.0g sugars per 100g for its sweetened Plant Kitchen drink and 0.4g per 100g for its unsweetened drink.
Compare the ‘of which sugars’ line on a consistent per-100g or per-100ml basis, alongside the flavour guests are likely to want.
Relevant brand examples
These product-line examples show why checking the exact carton matters; they do not describe every drink made by either brand.
Alpro
Waitrose & Partners lists 1-litre long-life no-sugar Alpro drinks in standard and organic variants.
- The standard Alpro Soya Long Life No Sugar drink lists 0g sugars per 100ml and added calcium, iodine and vitamins B2, B12 and D2.
- The Alpro Organic No Sugar variant also lists 0g sugars per 100ml, but should not be treated as a fortified alternative: the UK Government’s SACN/COT summary says plant-based drinks labelled organic in the UK cannot be nutrient-fortified.
- Both researched Alpro cartons state five days refrigerated after opening.
M&S Plant Kitchen
Marks & Spencer lists 1-litre long-life unsweetened and sweetened soya drinks with different labelled sugar figures.
- The researched unsweetened and sweetened cartons list calcium, iodine, vitamin D and vitamin B12.
- The unsweetened carton lists 0.4g sugars per 100g; the sweetened carton lists 2.0g per 100g.
- Both researched cartons state three days refrigerated after opening and say they are not suitable for people with nut or peanut allergy.
Joybuy soya drink options
These Alpro listings offer a long-life no-sugars multipack and a Plant Protein listing. Check the pack quantity before relying on either listing for a party needing approximately 3.41 litres.
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Alpro Soya No Sugars Long Life Drink, 8 × 1L
The listed eight 1-litre cartons provide 8 litres, so this pack exceeds the party’s approximate 3.41-litre requirement. Consider whether you can use the unopened cartons later; check the current pack’s allergen information before serving.
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6 Alpro Plant Protein 1L
For a party needing approximately 3.41 litres, confirm what the leading ‘6’ means in this listing and the total volume you would receive before ordering. Check the current pack’s allergen information against guests’ requirements.
Questions about buying and serving
How many 1-litre cartons cover six UK pints?
Four 1-litre cartons provide 4 litres, covering six UK pints, or approximately 3.41 litres. You need not open all four at the start of the party.
Should I choose sweetened or unsweetened soya drink?
Choose according to how the drink will be served: an unsweetened carton allows for less sweet uses, while a sweetened one suits occasions where that flavour is wanted. For a like-for-like label comparison, Marks & Spencer lists 0.4g sugars per 100g for its unsweetened drink and 2.0g per 100g for its sweetened Plant Kitchen drink.
Are all soya drinks fortified?
No; check the exact carton for added nutrients. The researched standard Alpro no-sugar and Marks & Spencer drinks list added nutrients, but the UK Government’s SACN/COT summary says plant-based drinks labelled organic in the UK cannot be fortified with nutrients.
Is dairy-free soya drink suitable for guests with allergies?
Not automatically: soya is itself an allergen, and other warnings depend on the product. The researched Marks & Spencer cartons say they are not suitable for people with nut or peanut allergy. Ask about guests’ requirements and check the current pack’s ingredients and precautionary allergen information before serving.
How long can I keep an opened carton after the party?
Follow that carton’s storage instructions. The researched Marks & Spencer soya drinks state three days refrigerated after opening; the researched Alpro long-life drinks state five days refrigerated. Store unopened cartons according to their pack instructions and best-before dates.