Home workers who want a drink without mixing
Jimmy's Strong comes in a 250ml ready-to-drink can. Sainsbury's states 57mg caffeine per 100ml on its product label, making the amount easier to assess than flavour words such as “strong”.
Who each format suits
Home workers who want to choose their own liquid
NESCAFÉ Espresso Concentrated Unsweetened can be mixed with a liquid of your choice. Tesco's standard preparation uses a 30ml shot with 150ml cold milk; NESCAFÉ states approximately 87mg caffeine per standard serve.
Black-coffee drinkers avoiding dairy and sugar
Coffee Friend UK describes Sandows cold brew as coffee and filtered water, with 0g sugars and 40.5mg caffeine per 100ml. Check the current pack's ingredients and allergen information before buying.
What to check before choosing
Start with the caffeine amount for the portion you will drink, then choose between a finished drink and one you can mix yourself.
| Priority | What to check | Your needs |
|---|---|---|
| Caffeine amount | Compare milligrams for the portion you will drink, not strength wording alone. Sainsbury's states 57mg per 100ml for Jimmy's Strong, or 142.5mg per 250ml can by calculation; NESCAFÉ states approximately 87mg per standard 30ml concentrate serve. These are different drink formats. | I want to know how much caffeine my lunch drink adds to the rest of my day. |
| Preparation | Check whether the drink is ready to open or needs mixing. Tesco's method for NESCAFÉ concentrate uses 30ml concentrate, 150ml cold milk and ice; a finished can has a fixed recipe. | For a short lunch break, I may prefer a can; at home, I might prefer choosing the liquid and mixing a drink. |
| Ingredients | Read the current ingredients, allergen declaration and sugars per 100ml. Sainsbury's lists semi-skimmed milk and 4.6g sugars per 100ml for Jimmy's Strong; Coffee Friend UK lists Sandows as coffee and water with 0g sugars per 100ml. | If I avoid milk or want black coffee without sugar, I need to check the actual recipe rather than the words “cold coffee”. |
| Opened storage | Check the pack instructions against how often you will use it. Waitrose says to refrigerate Jimmy's Strong after opening and drink it within two days; Tesco gives 14 days refrigerated after opening for NESCAFÉ concentrate. | A multi-serve bottle works for me only if I expect to use it within its opened-storage period. |
| Daily caffeine | Add caffeine from other drinks and products. The NHS advises no more than 200mg of caffeine a day during pregnancy; one 250ml Jimmy's Strong can contains 142.5mg based on Sainsbury's labelled concentration. | I need to count the lunch coffee alongside other caffeine I consume, particularly if the NHS pregnancy guidance applies to me. |
Common buying mistakes
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Reading “strong” or “double shot” as a caffeine measurement
Those descriptions cannot establish a milligram comparison. Sainsbury's gives Jimmy's Strong as 57mg per 100ml, while NESCAFÉ gives approximately 87mg per standard concentrate serve; M&S describes a double espresso shot without giving a caffeine amount for its Classic Latte Cold Brew.
Use a stated caffeine amount and serving size when caffeine is the deciding factor. Treat flavour descriptions separately.
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Assuming all cold coffee has the same ingredients
M&S Classic Latte Cold Brew and Jimmy's Strong contain milk. Coffee Friend UK describes Sandows as a black coffee-and-water drink, while the ingredients in a prepared NESCAFÉ concentrate drink depend partly on what you add.
Check the current ingredients and allergen declaration, particularly if you need to avoid milk; compare sugars using the same stated quantity.
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Treating concentrate as a finished drink
NESCAFÉ concentrate is mixed into another liquid. Tesco's standard method uses a 30ml shot with 150ml cold milk and ice, so a bottle and a ready-to-drink can do not represent the same number of prepared drinks.
Check the serving directions and whether you are likely to use the opened bottle within Tesco's stated 14 days.
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Counting only the lunchtime coffee
Other drinks and products can contribute caffeine during the day. During pregnancy, the NHS advises a maximum of 200mg caffeine a day; a 250ml Jimmy's Strong can contributes 142.5mg based on Sainsbury's label.
Check the portion you intend to drink and account for your other caffeine sources that day.
Brand and product-line references
Jimmy's Iced Coffee
Its Strong 250ml can is a ready-to-drink, milk-based iced coffee.
- Sainsbury's labels Strong at 57mg caffeine per 100ml.
- It contains semi-skimmed milk and 4.6g sugars per 100ml, according to Sainsbury's.
NESCAFÉ
Its Espresso Concentrated Unsweetened is a coffee base to mix into a cold drink.
- NESCAFÉ states approximately 87mg caffeine per standard 30ml serve; you choose the liquid added.
- The drink needs preparation, and Tesco instructs shoppers to refrigerate the bottle after opening and use it within 14 days.
M&S Food
Its Classic Latte Cold Brew is a ready-to-drink, milk-based cold coffee.
- M&S describes cold brew combined with a double shot of espresso and semi-skimmed milk.
- A double-shot description does not, by itself, establish its caffeine amount against drinks labelled in milligrams.
Sandows
The cold brew described by Coffee Friend UK is a ready-to-drink black coffee made with coffee and filtered water.
- Coffee Friend UK lists 0g sugars and 40.5mg caffeine per 100ml for this product.
- Check the current retailer listing and pack for the exact product and ingredients you intend to buy.
Joybuy cold-coffee option
This mix-at-home coffee option suits a lunch break when you can add cold water; check its caffeine label if a measured caffeine amount is central to your choice.
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J.ZAO Extra-Strong Americano Coffee Liquid, 25ml × 10 pouches
For a cold coffee at a working-from-home lunch, mix one 25ml pouch with about 200ml cold water. The listing states 0g sugars per 100ml of concentrate. If the caffeine amount or cold-brew extraction method determines your choice, check those details on the current pack rather than relying on “extra-strong” or “cold brew” in the title.
Frequently asked questions
Does “strong” tell me how much caffeine a cold coffee contains?
No: check a stated amount for the serving you will drink. Sainsbury's labels Jimmy's Strong at 57mg per 100ml, equivalent to 142.5mg per 250ml can; NESCAFÉ states approximately 87mg per standard 30ml concentrate serve. M&S describes a double espresso shot in its Classic Latte Cold Brew, which is not a milligram figure for comparison.
Can I choose a black cold coffee without dairy or sugar?
Coffee Friend UK describes Sandows cold brew as coffee and filtered water with 0g sugars per 100ml. NESCAFÉ Espresso Concentrated Unsweetened lets you choose what to mix in, so check the concentrate's current label and the ingredients of any liquid you add. If you have a milk allergy, check the full allergen declaration on the product you buy.
How does a strong lunch coffee fit with pregnancy caffeine guidance?
The NHS advises no more than 200mg caffeine a day during pregnancy, counting caffeine from other sources as well as lunch coffee. Based on Sainsbury's labelled 57mg per 100ml, a 250ml Jimmy's Strong can contains 142.5mg before any other caffeine that day is counted.
How should I store these drinks after opening?
Waitrose says to refrigerate Jimmy's Strong after opening and drink it within two days. Tesco says to refrigerate NESCAFÉ Espresso Concentrated after opening and use it within 14 days. Follow the current pack instructions for the particular drink you buy.