Who is this for?

Bakers adapting a cake recipe that uses milk

If the recipe already measures out sugar, a plain unsweetened soya drink lets you avoid adding sweetness through the milk substitute. King Arthur Baking identifies soya milk’s protein level and viscosity as relevant similarities to dairy milk, though a particular cake recipe may still turn out differently.

Vegan bakers following a specific recipe

Good Food’s vegan chocolate cake calls for unsweetened soya milk in both the cake and frosting. Check its other ingredients too: using a plant-based drink alone does not make a cake vegan.

Occasional bakers keeping a carton on hand

A long-life carton can be convenient before opening. Once opened, the instructions matter: Waitrose & Partners lists three days for its Essential Unsweetened Soya Drink, while its Alpro No Sugars listing says five days, with refrigeration required for both.

What matters when choosing soya milk?

Start with the recipe and any allergy requirements, then compare labels and carton sizes for the way you bake.

Priority What to check Your needs
Recipe sweetness Look for plain unsweetened or no-sugar wording, then read the sugars value on the carton. Waitrose & Partners lists 0g sugars per 100ml for Essential Unsweetened and Alpro No Sugars; Sainsbury’s lists less than 0.5g per 100ml for its Unsweetened Soya Drink. My cake recipe already includes measured sugar or a sweet filling, so I do not want a sweetened drink to change its balance.
Milk substitution Check whether the recipe calls for milk or specifies a particular plant drink. King Arthur Baking reports that soya milk is close to dairy milk in protein level and viscosity; that comparison does not guarantee the same result in every cake. I am replacing milk in a familiar recipe and would rather begin with a plain drink than introduce an additional flavour.
Opened-carton use Check the pack quantity and the exact refrigeration instructions. Waitrose & Partners states three days after opening for Essential Unsweetened and five days for Alpro No Sugars. If I bake only occasionally, I want a quantity I can use within the carton’s stated period after opening.
Allergies and recipe requirements Read the drink’s current allergen statement and check every other cake ingredient. The Food Standards Agency identifies soya as an allergen; Marks & Spencer also marks its Unsweetened Soya Drink unsuitable for people with nut or peanut allergy. I need to know whether the finished cake meets the requirements of everyone who will eat it, not just whether the drink is plant-based.

Mistakes to avoid

  • Treating every soya drink as interchangeable

    A sweetened or flavoured drink introduces a change that a recipe written for plain milk may not account for. King Arthur Baking’s comparisons of soya milk with dairy milk do not mean every soya formulation will behave identically.

    Begin with a plain unsweetened drink when adapting a recipe, and keep the other ingredients as written for the first bake.

  • Assuming plant-based means suitable for every allergy

    The Food Standards Agency identifies soya as an allergen. Suitability can also vary by product: Marks & Spencer marks its Unsweetened Soya Drink unsuitable for people with nut or peanut allergy.

    Do not use soya drink for someone with a soya allergy. For other allergy requirements, check the current label of every ingredient.

  • Overlooking storage after opening

    Opened-carton instructions differ. Waitrose & Partners lists three refrigerated days for Essential Unsweetened Soya Drink and five for Alpro No Sugars.

    Choose a quantity and carton you can use within its own instructions, rather than relying on the unopened storage format.

    A large pack can also leave several cartons to store or an opened carton to use promptly.

  • Relying on a listing instead of the carton

    Ingredients, nutrition information and suitability statements can change, so an earlier product listing may not describe the carton in hand.

    Before baking for a dietary requirement, check the current pack’s ingredients, allergen statement and storage instructions.

Brand and own-label references

These are product-line references for comparing labels, not an indication that each carton is among the Joybuy options below.

Alpro

Waitrose & Partners lists Alpro Soya No Sugars as a long-life drink with 0g sugars and 3.3g protein per 100ml.

  • Its listing says to refrigerate after opening and use within five days.
  • These label details do not establish how it will perform in a particular cake.

Tesco

Tesco Groceries lists its Longlife Soya Drink Unsweetened as a 1L UHT carton containing 9% soya bean and 3.4g protein per 100ml.

  • The listing identifies an unsweetened long-life option for recipes that specify plain soya drink.
  • Use the current carton for its ingredients and opened-carton instructions.

Sainsbury’s

Sainsbury’s lists its 1L Unsweetened Soya Drink with less than 0.5g sugars and 2.2g protein per 100ml.

  • Its listing gives a clear sugars value for comparing an unsweetened recipe ingredient.
  • The opened carton should be used within three days, according to the listing.

M&S

Marks & Spencer lists its Unsweetened Soya Drink with 0.4g sugars and 2.8g protein per 100g.

  • The nutrition figures offer a label-based way to assess this specific drink.
  • Marks & Spencer marks it unsuitable for people with nut or peanut allergy.

Waitrose

Waitrose & Partners lists Essential Unsweetened Soya Drink as a UHT product with 0g sugars and 3.4g protein per 100ml.

  • Its label details provide both sugar and protein values for this own-label carton.
  • After opening, the listing says to refrigerate below 5°C and use within three days.

Joybuy soya drink options

These Alpro soya drinks are options to assess for cake baking. Check the exact variant and quantity against your recipe and how often you expect to use an opened carton.

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

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

The no-sugars variant is worth considering when a cake recipe already measures its sweetness. Waitrose & Partners lists 0g sugars and 3.3g protein per 100ml for Alpro Soya No Sugars, with refrigeration and use within five days after opening. This Joybuy listing is for eight 1L cartons, so consider where you will keep them and how you will use each opened carton.

View on Joybuy
Alpro Soya Drink OG

Alpro Soya Drink OG

If considering this soya drink for a cake, check the current carton’s sugars value against the recipe. Confirm the pack quantity before buying; the initial “6” in the product name does not establish how many cartons are included. Check the pack’s storage instructions and allergen statement before use.

View on Joybuy

Cake-baking questions

Can I use soya milk instead of dairy milk in a cake?

Plain soya drink is a reasonable starting point for a cake recipe that calls for milk. King Arthur Baking reports that soya milk is close to dairy milk in protein level and viscosity, but its comparisons do not guarantee the same result in every cake. Keep the other recipe ingredients unchanged for your first attempt.

Why choose unsweetened soya drink for baking?

It avoids introducing a sweetened drink into a recipe that already measures out sugar. For specific UK cartons, Waitrose & Partners lists 0g sugars per 100ml for Essential Unsweetened and Alpro No Sugars, while Sainsbury’s lists less than 0.5g per 100ml for its Unsweetened Soya Drink. Check the carton you buy rather than relying on the word “unsweetened” alone.

Does using soya drink make a cake vegan?

No. The other ingredients matter too. Good Food’s vegan chocolate cake uses unsweetened soya milk alongside dairy-free spread and dairy-free chocolate; check every ingredient when following a vegan recipe.

Can I bake with soya drink for someone with a soya allergy?

Do not use a soya drink for someone with a soya allergy. The Food Standards Agency identifies soya as an allergen and warns that products containing it may pose a health risk to that person. Check all ingredients when choosing a non-soya alternative.

How long can I keep an opened carton for another bake?

Follow the instructions on the exact carton. Waitrose & Partners says to refrigerate Essential Unsweetened Soya Drink and use it within three days of opening; its Alpro No Sugars listing specifies refrigeration and use within five days.