Who is this shop for?

The right carton count depends less on a family-size description than on how often your household opens and finishes a litre.

Home workers using soya drink most weekdays

If you use it at lunch and in tea, coffee or cereal, consider how much you finish before an opened carton’s stated use period ends. Cupboard space matters if you plan to keep several unopened cartons.

Shoppers replacing dairy regularly

Compare the exact carton’s calcium, iodine and vitamin D and B12 information rather than assuming all soya drinks have the same fortification. The UK Office for Health Improvement and Disparities’ 2025 assessment says the nutrient content of plant-based drinks varies considerably.

Households buying several cartons at once

Choose the quantity around your household’s actual use, storage space and each product’s after-opening instructions. An unsweetened label alone does not tell you whether two cartons have the same nutrients or storage requirements.

What should you check before buying?

Set the quantity first, then compare the labels of cartons that fit your usual lunch and drink routine.

Priority What to check Your needs
Carton quantity Six UK pints are about 3.41 litres; four 1-litre cartons provide 4 litres. Check the number and size of cartons in any multipack. I want roughly six pints available for lunches, but I do not want to mistake six 1-litre cartons for six pints.
Storage and use Check whether unopened cartons need chilling or permit cupboard storage. Read the refrigeration and use-within instructions for each carton after opening. If I use only a little each day, I need to be able to finish one opened carton within its stated period before opening another.
Fortification Compare calcium, iodine and vitamins D and B12 on the exact label. The UK Office for Health Improvement and Disparities’ 2025 assessment says plant-based drinks vary considerably in nutrient content. Soya drink regularly replaces dairy in my routine, so I want to know what each carton actually lists rather than relying on the word “soya”.
Sugars and flavour Compare original and unsweetened versions by their sugars figure per 100 ml and their ingredients. For tea or coffee, also check any preparation advice on the pack. I would prefer an unsweetened flavour for cereal or savoury lunches, but I need a carton that also works for the drinks I make.
Allergens Check the physical pack for soya and any product-specific nut or peanut warning. For example, ASDA’s JUST ESSENTIALS listing says “may contain nuts”, while M&S says its unsweetened soya drink is unsuitable for people with nut or peanut allergy. Someone using my lunch ingredients has a food allergy, so I need to check the particular carton rather than assume all plant-based drinks carry the same warnings.

What can make a multi-carton shop impractical?

  • Assuming every unsweetened carton has the same nutrients

    “Unsweetened” describes a formulation choice, not a shared fortification profile. The UK Office for Health Improvement and Disparities’ 2025 assessment says nutrient content varies considerably across plant-based drinks.

    If soya drink regularly replaces dairy, compare calcium, iodine and vitamins D and B12 on the cartons you are considering.

  • Buying several cartons without planning when to open them

    Long-life storage applies before opening. The listed Alpro long-life no-sugar drink says to refrigerate and use within five days after opening; Sainsbury’s unsweetened soya drink says to use it within three days.

    For a roughly six-pint shop, start by considering four 1-litre cartons. Open one at a time and follow its own storage instructions.

    Opening more cartons than you can use within their stated periods can leave drink to discard.

  • Assuming “plant-based” settles every allergy question

    Soya drink contains soya, and nut or peanut precautions differ between products. ASDA’s JUST ESSENTIALS listing includes a may-contain-nuts statement; M&S says its unsweetened drink is unsuitable for people with nut or peanut allergy.

    Read the current physical pack, including its declared ingredients and precautionary allergen wording, before serving it to someone with a food allergy.

Brand and retailer references

These examples show why it is worth comparing individual cartons; a retailer or brand name does not establish the contents of every product in its range.

Alpro

A branded route if you are considering a no-sugars long-life soya drink.

  • Joybuy’s Alpro Soya Milk Unsweetened 1L listing identifies calcium and vitamins B2, B12 and D.
  • The Alpro long-life no-sugar carton listed by Waitrose must be refrigerated after opening and used within five days. Check the instructions on the variant you buy.

Tesco

An own-label long-life unsweetened option alongside branded soya drinks.

  • Tesco lists its Longlife Soya Drink Unsweetened as a 1-litre carton.
  • Compare its own label with any branded carton rather than assuming they have matching fortification.

Sainsbury's

A chilled own-label unsweetened carton for households that expect to use it promptly.

  • Its 1-litre unsweetened soya drink lists calcium, iodine and vitamins D and B12.
  • Sainsbury's says to use this product within three days of opening.

Asda

An own-label 1-litre unsweetened carton to compare on storage and labelling.

  • The JUST ESSENTIALS by ASDA listing says to keep the drink refrigerated after opening and consume it within four days.
  • The listing declares soya and includes a may-contain-nuts warning; check the pack if either allergen matters to your household.

M&S

An unsweetened soya drink with specified fortification.

  • M&S lists calcium, iodine and vitamins D and B12 for its unsweetened soya drink.
  • Its product page says the drink is not suitable for people with nut or peanut allergy.

Waitrose

A retailer reference for Alpro Soya Long Life No Sugar, rather than a Waitrose own-label example.

  • The Waitrose listing gives product-specific storage instructions for the Alpro carton.
  • Once opened, that carton must be refrigerated and used within five days; this does not establish the period for other soya drinks.

Joybuy soya drink option

This Alpro long-life multipack is an option for households that use more than a roughly six-pint shop and have space for eight 1-litre cartons.

Alpro Soya No Sugars Long Life Drink, eight 1-litre cartons

Alpro Soya No Sugars Long Life Drink, 8 x 1L

The eight 1-litre cartons total 8 litres, considerably more than the approximately 3.41 litres in six UK pints. Consider how you will store and use the extra cartons; if iodine fortification or use in hot drinks matters to you, check the exact pack label and preparation advice before buying.

View on Joybuy

Questions about soya drink for home lunches

How many litres are six UK pints of soya drink?

Six imperial pints are approximately 3.41 litres. Four 1-litre cartons provide 4 litres, while six 1-litre cartons provide 6 litres—not six pints. Check the quantity on a multipack rather than relying on a “six” in its name.

Does an unsweetened soya drink need to be fortified?

An unsweetened label does not tell you which nutrients a carton lists. If soya drink regularly replaces dairy for you, compare calcium, iodine and vitamins D and B12 on the exact product. The UK Office for Health Improvement and Disparities’ 2025 assessment says plant-based drinks vary considerably in nutrient content, and the NHS advises checking the label to see whether a plant-based drink includes iodine.

Can someone with a soya, nut or peanut allergy use soya drink?

Soya drink is not suitable for someone with a soya allergy. Nut and peanut precautions require a check of the specific pack: M&S says its unsweetened soya drink is unsuitable for people with nut or peanut allergy, while ASDA’s JUST ESSENTIALS listing includes a may-contain-nuts statement.

How long can I keep an opened carton?

Follow the period on the carton you buy. Waitrose’s listing for Alpro Soya Long Life No Sugar says to refrigerate it and use it within five days of opening; Sainsbury’s unsweetened soya drink says three days, and ASDA’s JUST ESSENTIALS unsweetened drink says four days. Long-life storage before opening does not replace those instructions.