Who might choose each format?

Gym-goers keeping drink sugars low

An unsweetened black cold brew lets you have coffee after exercise without relying on it for refuelling. Have water and food separately according to your routine.

People exercising later in the day

A cold brew labelled decaffeinated may suit someone who wants a chilled coffee-style drink without choosing a regular caffeinated version. Check the pack if you need to limit caffeine closely.

Plant-based latte drinkers

Oat-based cold brews offer a dairy-free latte format, but sugars, caffeine and allergen advice differ by product. Check the serving you intend to drink rather than relying on the front-of-pack description.

What should you check before buying?

Start with what you will eat and drink after exercise, then compare cold brews by the amount you will actually prepare or pour.

Priority What to check Your needs
Food and fluids Decide what food and water will accompany the coffee. The British Dietetic Association advises carbohydrate-rich food and fluids when quick recovery is needed; the NHS recommends water to replace lost fluids. After a demanding session or when I need to recover quickly, coffee is something I might enjoy alongside food and water, not in place of them.
Sugars per serving Compare ‘of which sugars’ for the prepared glass, can or portion you will drink. Tesco Groceries lists 0g sugars per prepared 200ml glass of its concentrate; Sainsbury's lists 4.8g per 250ml can for the no-added-sugar Nolo oat latte. I want to know how much sugar is in my drink, including naturally occurring sugars in an oat latte. A ‘no added sugar’ claim alone does not give me that figure.
Caffeine and volume Read the caffeine amount and its stated volume, then account for how much you intend to drink and any other caffeine that day. M&S lists 34.6mg per 100ml for its 750ml oat latte. For a late-day drink or a larger bottle, I want to assess caffeine for my portion rather than treating the whole container as a single stated serving.
Ingredients and allergens Check the current ingredients, allergen declaration and suitability statement. M&S labels its oat latte dairy-free but unsuitable for people with coeliac disease or a soya or wheat allergy; Nolo contains oat. I may prefer a dairy-free latte, but I still need to check whether its other ingredients and product-specific warnings suit me.

Common cold brew buying mistakes

  • Treating low-sugar coffee as recovery nutrition

    Keeping sugars low in a coffee does not make it a substitute for food and fluids. The British Dietetic Association advises carbohydrate-rich food and fluids when quick recovery is needed, and the NHS recommends water to replace lost fluids.

    Choose the cold brew for its coffee format, then plan food and water separately around your exercise.

  • Overlooking the caffeine in a full bottle

    M&S states 34.6mg caffeine per 100ml for its 750ml oat latte. Drinking the whole bottle would provide approximately 259.5mg based on that declared figure.

    Calculate caffeine for the volume you plan to drink and consider other sources you have that day.

  • Reading ‘no added sugar’ as ‘0g sugars’

    An oat-based drink can contain naturally occurring sugars without added sugar. Sainsbury's lists 4.8g sugars per 250ml can for Nolo Decaf Classic Cold Brew Oat Latte.

    Use the nutrition panel’s ‘of which sugars’ figure for your serving when comparing drinks.

  • Assuming dairy-free covers every dietary restriction

    Oat lattes contain ingredients beyond coffee and water. M&S labels its oat latte unsuitable for people with coeliac disease or a soya or wheat allergy despite its dairy-free description.

    Read the current pack’s ingredients, allergen declaration and suitability statement before choosing a product.

Cold brew brand references

Tesco Finest

Its unsweetened cold-brew concentrate is a black-coffee option prepared by dilution rather than a ready-to-drink bottle.

  • Tesco Groceries lists 0g sugars and 12kcal per prepared 200ml glass.
  • The concentrate needs preparing, and additions such as milk or syrup change the finished drink’s nutrition.

M&S Plant Kitchen

Its chilled cold-brew oat latte is a 750ml, ready-to-drink dairy-free option.

  • M&S states that the latte is made with oats and Colombian coffee.
  • The M&S label lists 2.9g sugars per 100g and 34.6mg caffeine per 100ml, and says it is unsuitable for people with coeliac disease or a soya or wheat allergy.

Nolo

Its 250ml decaf cold-brew oat latte is a plant-based, ready-to-drink route for someone who prefers a decaffeinated coffee.

  • The Sainsbury's listing describes it as decaffeinated, with no added sugar or sweeteners.
  • The same listing gives 4.8g sugars per can, and the drink contains oat.

Sandows

Sandows makes cold brew in London; Coffee Friend UK lists a ready-to-drink black coffee made with coffee and filtered water.

  • Coffee Friend UK lists the 200ml drink as dairy-free, with 0g sugars per 100ml.
  • Check the current pack for its nutrition and caffeine declarations before choosing it.

A Joybuy cold brew option

This black cold-brew concentrate is an option for keeping sugars in the coffee low while having food and water separately after exercise.

J.ZAO Extra-Strong Americano cold-brew coffee, ten 25ml pouches

J.ZAO Extra-Strong Americano Cold-Brew Coffee, 25ml × 10 Pouches

The single-serve concentrate is designed to mix with cold water for a black coffee after exercise, alongside food and water rather than instead of them. Its product description lists 0g sugars and 0g fat. Check the current pack’s energy and caffeine information for the serving you intend to drink.

View on Joybuy

Cold brew questions answered

Is cold brew enough for post-workout recovery?

No. Cold brew can be part of the routine, but the British Dietetic Association advises carbohydrate-rich food and fluids when quick recovery is needed. The NHS recommends water to replace fluids lost through physical activity, so plan food and water separately from your coffee.

Does ‘no added sugar’ mean a cold brew has 0g sugars?

No. A drink can contain naturally occurring sugars without added sugar. Sainsbury's lists Nolo Decaf Classic Cold Brew Oat Latte as having no added sugar or sweeteners, but its 250ml can contains 4.8g sugars. Compare the nutrition panel for the amount you will drink.

When might decaf cold brew make sense after exercise?

A product labelled decaffeinated is a choice if you prefer not to have a regular caffeinated cold brew after a later workout. Decaf does not tell you its sugar or allergen profile: check those details, and check its caffeine declaration if you need to limit caffeine closely.

How should I check cold-brew caffeine during pregnancy?

The NHS advises no more than 200mg caffeine a day during pregnancy, so check the amount in the portion you plan to drink alongside other caffeine sources. M&S declares 34.6mg per 100ml for its 750ml oat latte; the whole bottle would provide approximately 259.5mg based on that figure.

Is a dairy-free cold-brew latte suitable for every restricted diet?

No. Read the current pack’s ingredients, allergen declaration and suitability statement rather than relying on ‘dairy-free’ alone. M&S labels its oat latte unsuitable for people with coeliac disease or a soya or wheat allergy, while Nolo’s oat latte contains oat.