For biscuits where banana, chocolate, malt and caramel should not become the main flavours, start with a vanilla-flavoured drink. Tesco lists Yazoo Vanilla and Shaken Udder Vanillalicious as vanilla products, while Asda lists FRijj as banana-flavoured and Tesco describes the Mars drink as chocolate, malt and caramel-flavoured. Do not assume a milkshake will substitute exactly for plain milk: check its ingredients and allergens, and try a small batch before changing a recipe’s liquid.
If the dough or topping should remain the focus, a vanilla-labelled drink is a more restrained flavour direction than the banana or chocolate-malt-caramel products compared here. That is a choice based on their labels, not a prediction of the finished biscuit’s taste.
A banana drink belongs in a recipe where banana is intentional; a chocolate, malt and caramel drink belongs in one designed around those flavours.
The compared Yazoo, Shaken Udder, FRijj and Mars drinks contain milk, and the Mars drink also lists barley malt extract. Check the current pack before baking for guests or sharing biscuits.
Choose the flavour direction first, then check how the drink’s ingredients and opened-pack instructions fit the recipe and your batch plan.
| Priority | What to check | Your needs |
|---|---|---|
| Flavour | Check the stated flavour and ingredient list. Tesco lists Yazoo and Shaken Udder as vanilla drinks; Asda lists FRijj as banana-flavoured, while Tesco describes Mars as chocolate, malt and caramel-flavoured. | I want the dough or topping to remain the focus, so I would start with vanilla. If banana or chocolate-malt is the point of the recipe, I can choose that flavour deliberately. |
| Sugars and sweeteners | Compare sugars on the same per 100ml basis: Tesco lists 8.7g for Yazoo and 9.2g for Shaken Udder; Asda lists 10.4g for FRijj. Tesco’s Mars ingredient list includes sweeteners. Check any stabilisers or other ingredients relevant to the recipe. | I need to account for what the drink adds rather than treating it as unsweetened plain milk, especially if I am changing an existing biscuit recipe. |
| Allergens | Check the current pack’s allergen declaration. The compared drinks contain milk; FRijj also lists buttermilk, and Mars lists barley malt extract. | When baking for someone who avoids milk or barley, I need to choose ingredients that meet their requirements before making the dough. |
| Pack and storage | Match pack size to the planned batches. Tesco says to refrigerate opened Yazoo and use it within three days, and to keep Shaken Udder at 1–5°C and use it within two days; Asda gives FRijj a three-day refrigerated window after opening. | A larger bottle only works for me if I can use the remainder within its own label’s instructions. |
FRijj is banana-flavoured, while the Mars drink is described as chocolate, malt and caramel-flavoured. Either takes the recipe in a different flavour direction from vanilla.
For plain, vanilla or lightly spiced biscuits, begin with a vanilla-labelled option. Choose the other flavours when they are part of the recipe plan.
These are flavoured drinks rather than plain milk. Tesco and Asda list different sugars per 100ml for the compared vanilla and banana products, and the Mars drink contains sweeteners.
Read the ingredient and nutrition panels before adjusting a recipe. Try a small batch rather than assuming an exact plain-milk substitution.
Opened-pack instructions differ: Tesco gives Shaken Udder two days under refrigeration, while Tesco’s Yazoo listing and Asda’s FRijj listing specify three days.
Choose a size that fits your batches, refrigerate after opening as directed and follow the pack’s stated time limit.
An opened pack left beyond the time you can use it may mean discarding the remainder.
The compared products contain milk, and the Mars ingredient list also includes barley malt extract. Baking them into biscuits does not remove those ingredients.
Check the current on-pack allergen declaration before baking, particularly when the biscuits will be shared.
These references describe specific labelled drinks and flavour directions, not every product made by each brand.
Tesco lists Yazoo Vanilla as a 400ml UHT vanilla milk drink.
Tesco lists the 750ml Vanillalicious milkshake with Madagascan vanilla seeds.
Müller and Asda describe the Banana drink as a banana-flavoured milkshake for a recipe where that flavour is intentional.
Tesco describes the 400ml drink as chocolate, malt and caramel-flavoured rather than a mild vanilla option.
These vanilla-flavoured protein shakes offer a way to consider the vanilla route for a small biscuit-baking trial. Their stated flavours and pack sizes do not establish how either shake will behave in dough.
No image available
The stated vanilla flavour fits a trial where banana or chocolate-malt is not wanted. The pack contains eight 250ml drinks; check the current ingredients and sugars before using one in place of a recipe liquid, and test a small batch.
No image available
The stated vanilla ice cream flavour offers a vanilla direction, while each 500ml drink calls for a plan for any remainder. Check the current ingredients, including sweeteners, and try a small batch before changing a biscuit recipe’s liquid.
Start with a vanilla-labelled drink if banana, chocolate, malt or caramel should not lead the flavour. Tesco lists Yazoo Vanilla and Shaken Udder Vanillalicious as vanilla products; Asda’s FRijj is banana-flavoured, and Tesco describes the Mars drink as chocolate, malt and caramel-flavoured. This is a judgement from product descriptions, not a baking taste test.
Do not assume an exact like-for-like swap. Dr. Oetker UK explains that milk contributes moisture, tenderness and browning in baking, while these ready-to-drink products also bring flavourings and, depending on the drink, sugars, stabilisers or sweeteners. Try a small batch and keep the recipe’s liquid balance in view.
No: the compared Yazoo, Shaken Udder, FRijj and Mars products contain milk, and FRijj also lists buttermilk. For dairy-free baking, choose an ingredient labelled for that requirement and check its suitability for your recipe.
No. Tesco describes the Mars drink as chocolate, malt and caramel-flavoured, and its ingredient list includes cocoa powder, barley malt extract and sweeteners. Choose it when those flavours are intended, not as a neutral base.
Refrigerate it and follow its own opened-pack instructions. Tesco specifies three days after opening for Yazoo and two days at 1–5°C for Shaken Udder; Asda specifies three days under refrigeration for FRijj. Check any use-by date on the pack as well.