Who is each format for?

The useful distinction at elevenses is whether you want to drink the coffee straight away or prepare a measured serving.

Mid-morning coffee drinkers choosing a format

A ready-to-drink can needs no dilution. A concentrate gives you control over how you prepare each serving, but you need to follow its portioning directions rather than treat the whole pack as one drink.

Dairy-free cold-coffee shoppers

M&S describes its Oat Latte Cold Brew as dairy-free. Its allergen statement also says it is not suitable for people with coeliac disease or a wheat allergy, so check the full label rather than relying on “dairy-free” alone.

People checking caffeine intake

Flavour descriptions cannot tell you how much caffeine a serving contains. Check the declared amount alongside the portion you plan to drink. Tesco’s Solo concentrate carries a warning for children, pregnant or nursing women, and people sensitive to caffeine.

What should you check before buying?

Decide whether you want a finished drink or a concentrate first; then compare the label details that matter for your serving.

Priority What to check Your needs
Caffeine and serving size Look for caffeine per serving or per 100ml; check the intended serving size; do not use “strong” or “double shot” as a caffeine figure. I want to know how much caffeine is in the amount I will actually drink, especially if I am portioning a concentrate.
Preparation Check whether the drink is ready to drink; for a concentrate, read the dilution directions and number of servings. If my elevenses break is short, I would rather open a finished drink. If I can prepare it, I may prefer to measure and dilute a concentrate.
Ingredients and allergens Read the milk, oat, wheat and allergen information on the specific pack; check its sugar declaration if that matters to you. I need the coffee base and ingredients to suit me. M&S Classic Latte contains milk and sugar; M&S says its dairy-free Oat Latte is unsuitable for people with coeliac disease or a wheat allergy.
Storage and availability Check local availability before making a trip; read the pack’s storage directions, particularly after opening a multi-serve concentrate. For a drink I plan to use across several breaks, I want to know how to store the opened pack and when to finish it.

Common cold-brew buying mistakes

  • Reading “strong” as a standard caffeine rating

    “Robust”, “strong” and “double shot” describe flavour or a recipe, but they do not establish a like-for-like caffeine comparison between these drinks.

    Use a stated caffeine amount and the intended serving size where available. Do not assume one drink contains more or less caffeine solely because of its name.

  • Treating a concentrate as one ready-to-drink serving

    Tesco describes Solo Ready to Go Espresso as a multi-serve cold-brew concentrate. The amount poured and the serving directions matter when assessing what you will drink.

    Confirm the product format, measure a serving and dilute it according to its instructions.

  • Assuming dairy-free covers every allergen concern

    M&S describes its Oat Latte Cold Brew as dairy-free but states that it is not suitable for people with coeliac disease or a wheat allergy.

    Read the complete ingredient and allergen statements on the current pack, even if the front label appears to fit your needs.

  • Relying on an old listing or label description

    Local stock can vary, and M&S advises checking labels because product information can change.

    Check availability before travelling or ordering, then use the pack you receive for current ingredients, allergens, caffeine information and storage instructions.

Brands and retailers to know

These names illustrate different places to check for cold coffee; a retailer’s category listing alone does not establish the ingredients or caffeine content of a particular drink.

M&S

M&S lists Classic Latte and dairy-free Oat Latte cold-brew drinks for a ready-to-drink elevenses option.

  • M&S describes both as double-shot drinks; Classic Latte contains semi-skimmed milk and sugar.
  • M&S says its Oat Latte is not suitable for people with coeliac disease or a wheat allergy. Check the current pack for allergen details.

Tesco

Tesco lists Solo Ready to Go Espresso as a multi-serve cold-brew concentrate, rather than a finished latte.

  • The Solo listing describes a coffee base with no milk or sugar and gives portioning information.
  • Its caffeine warning names children, pregnant or nursing women, and people sensitive to caffeine. Check current stock and the pack before buying.

Waitrose

Waitrose’s iced-coffee category includes finished drinks and concentrates, including a listing for Jimmy’s Iced Coffee Strong 250ml.

  • The category offers a way to browse different chilled-coffee formats.
  • Check an individual product’s label before treating “Strong” as a caffeine figure or assuming that an iced coffee is cold-brewed.

Sainsbury’s

Sainsbury’s includes iced coffee in its coffee browsing categories.

  • The category is a starting point for checking local chilled-coffee choices.
  • Use the individual product page or pack to establish whether a drink is cold brew and to check its ingredients and caffeine declaration.

Sandows

Sandows says it crafts cold-brew coffee in its London brewery.

  • It is a specialist cold-brew producer rather than a supermarket browsing category.
  • Check the particular product and its current label before comparing caffeine, ingredients or serving format.

A Joybuy cold-brew concentrate

This Joybuy option is a portioned cold-brew concentrate to prepare for elevenses. It suits the dilute-it-yourself route, rather than the ready-to-drink latte route.

J.ZAO Extra-Strong Americano Cold Brew Coffee, 10 pouches of 25ml

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

The individual pouches let you prepare one elevenses coffee at a time. The supplied directions describe diluting a pouch with water and adjusting to taste, so this is not a ready-to-drink can. “Extra-Strong” is part of the product name, not a comparable caffeine measurement; check the pack’s caffeine declaration if the amount matters to you.

View on Joybuy

Cold-brew questions

Does “strong” tell me how much caffeine is in a cold brew?

No. Tesco describes Solo concentrate as rich, bold and strong, while M&S uses flavour and double-shot descriptions for its lattes. Check a stated caffeine amount against the serving you intend to drink rather than comparing those descriptions as if they were a common measure.

Which ready-to-drink cold brew is dairy-free?

M&S describes its Oat Latte Cold Brew as dairy-free. It also says the drink is not suitable for people with coeliac disease or a wheat allergy, so read the current pack’s full allergen statement if either applies to you.

How do I store Solo concentrate after opening?

Tesco’s instructions for Solo Ready to Go Espresso say to refrigerate it after opening and consume it within 28 days. Follow the directions on the particular pack you buy; storage instructions for other cold brews may differ.

What should I check when choosing cold brew during pregnancy?

The NHS advises no more than 200mg of caffeine a day during pregnancy, counting caffeine from other foods and drinks as well as coffee. Check the caffeine amount for the serving you plan to have; Tesco’s Solo listing also says that product is not recommended for pregnant or nursing women.