Who is each format for?

Adults who want unsweetened black coffee

A concentrate suits someone willing to add water and adjust the dilution. Tesco Finest gives a starting method of 100ml concentrate with 100ml cold water; that method does not, by itself, tell you its caffeine content.

Adults who want coffee ready to drink

A bottled black cold brew avoids mixing, while a latte can suits someone who wants milk or oat ingredients. Sandows is listed as a ready-to-drink black coffee; the M&S Classic and Oat Lattes are 250ml cans.

Families serving lunch to adults and children

Choose the adult coffee separately from the children’s drinks. British Nutrition Foundation guidance for children aged 5–11 says caffeinated tea and coffee should be occasional and served in small amounts, and favours decaffeinated versions.

What should you check before choosing?

Decide whether you want to mix a black coffee or open a ready-to-drink bottle or can, then check the serving directions, ingredients and any caffeine figure on the exact product.

Priority What to check Your needs
Adjustable taste Look for a stated concentrate-to-water method and follow it as the starting serving. Tesco Finest specifies 100ml concentrate plus 100ml cold water and permits adjustment to taste. I want to make an adult black coffee to my taste and have water and a glass available at lunch.
Caffeine information Check the amount of caffeine and whether it applies per 100ml or per serving. Do not use ‘strong’ or ‘double shot’ as a substitute for a comparable figure. If caffeine quantity matters to me, I need the figure for the drink and portion I will actually have.
Ingredients and flavour Distinguish unsweetened black coffee from a latte. M&S Classic Latte contains semi-skimmed milk; check the current nutrition label if sugars matter to your choice. For black coffee, I would choose a drink without latte ingredients. If I want a milk-based cold coffee, those ingredients are part of the choice.
Children’s drinks Keep an adult cold brew separate. British Nutrition Foundation guidance for children aged 5–11 favours decaffeinated tea or coffee and says caffeinated versions should be occasional and served in small amounts. At a family lunch, I need a separate drink choice for the children rather than one strong coffee for everyone.
Allergens Read the label for the exact can: M&S Classic Latte contains milk, while M&S states that its Oat Latte is unsuitable for coeliacs and people with a wheat allergy. When milk, wheat or coeliac requirements matter at the table, I cannot judge a latte by ‘classic’ or ‘oat’ alone.

What can make the wrong drink look suitable?

  • Confusing coffee liqueur with cold-brew coffee

    Waitrose & Partners and Sainsbury’s list Tia Maria Cold Brew Coffee Liqueur, which contains Jamaican rum and is listed at 20% alcohol by volume. It is not a non-alcoholic lunch coffee.

    Check the product category and alcohol statement before adding a cold-brew search result to a family lunch selection.

  • Reading ‘strong’ as a caffeine measurement

    Flavour descriptions and ‘double shot’ wording do not provide a like-for-like caffeine comparison between a concentrate, bottled black coffee and a latte.

    If caffeine quantity affects the decision, compare figures on the same basis and use the serving size you intend to prepare.

  • Picking a latte when you want black coffee

    M&S Classic Latte contains semi-skimmed milk, so its ingredients differ from an unsweetened black-coffee concentrate.

    Choose the base drink before comparing flavour descriptions: black coffee if you do not want latte ingredients, or a latte if you do.

  • Assuming an oat latte meets every allergy requirement

    M&S marks its Oat Latte as unsuitable for coeliacs and people with a wheat allergy.

    Check the current ingredient and allergen label for the exact product rather than treating ‘oat’ as a suitability statement.

Brand and retailer references

These references distinguish the drinks described in the named listings; they are not a statement about every product sold by each retailer.

Tesco

Tesco Finest Unsweetened Cold Brew Coffee Concentrate is a 500ml concentrate for mixing at home.

  • Tesco Groceries gives a starting method of 100ml concentrate and 100ml cold water, with adjustment to taste.
  • Dilution changes the prepared drink’s taste; it does not provide a caffeine figure for comparison.

M&S

M&S lists 250ml Classic Latte and Oat Latte cold-brew cans for a ready-to-drink option.

  • Marks & Spencer describes both as made with a double shot of espresso.
  • Classic Latte contains semi-skimmed milk; Oat Latte is marked unsuitable for coeliacs and people with a wheat allergy.

Sandows

A Coffee Friend UK listing describes Sandows as a ready-to-drink black cold brew in a 200ml bottle.

  • The listing describes it as sugar-free and dairy-free and states 40.5mg caffeine per 100ml.
  • A ready-to-drink bottle does not offer the same dilution step as a concentrate.

Waitrose

The relevant Waitrose & Partners listing here is Tia Maria Cold Brew Coffee Liqueur.

  • Waitrose & Partners lists Jamaican rum and 20% alcohol by volume; this is not a non-alcoholic cold-brew lunch drink.

Sainsbury’s

The relevant Sainsbury’s listing here is also Tia Maria Cold Brew Coffee Liqueur.

  • Sainsbury’s lists Jamaican rum and 20% alcohol by volume, so this listing should not be mistaken for ordinary cold-brew coffee.

A Joybuy concentrate option

This pouch-based concentrate is an option for preparing an adult black coffee with water at lunch, rather than a ready-to-drink bottle or latte can.

J.ZAO Extra-Strong Americano Cold Brew Coffee Liquid, ten 25ml pouches

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

For an adult lunch coffee, mix one pouch with about 200ml of cold water, following the product directions. The pack contains ten 25ml pouches; the directions also allow hot water. Check the caffeine amount on the current label if you need to compare caffeine per serving: ‘extra-strong’ is not a measurement.

View on Joybuy

Common questions

Should children have strong cold brew with a school-holiday lunch?

Do not make the adult cold brew the shared lunch drink. British Nutrition Foundation guidance for children aged 5–11 says caffeinated tea and coffee should be occasional and served in small amounts, and favours decaffeinated versions.

Is cold-brew coffee liqueur the same as bottled cold-brew coffee?

No. The Tia Maria Cold Brew Coffee Liqueur listings from Waitrose & Partners and Sainsbury’s describe an alcoholic product containing Jamaican rum, listed at 20% alcohol by volume. Check the category and alcohol statement rather than relying on ‘cold brew’ in the name.

How can I adjust an unsweetened concentrate?

Start with the maker’s stated serving method, then adjust as its directions allow. Tesco Groceries specifies 100ml Tesco Finest concentrate with 100ml cold water and says the quantity can be adjusted to taste; changing dilution should not be treated as a measure of caffeine content.

What should I check on a cold-brew latte if allergens matter?

Read the current label for the exact drink before serving it. Marks & Spencer lists semi-skimmed milk in Classic Latte and marks Oat Latte as unsuitable for coeliacs and people with a wheat allergy.