Start with a coffee made for your brewer, then choose the flavour and preparation format: Sainsbury's describes its French Style Strength 4 grounds as medium-strong and suitable for filter machines, while M&S Italian Style cup filters offer a pre-portioned rich roast. A strength label does not tell you the caffeine in your mug. If you are breastfeeding, the NHS advises trying not to exceed 300mg of caffeine a day from all sources.
If you want a bold cup, check the stated brewing method before choosing by roast or strength label. Sainsbury's French Style grounds have filter-machine instructions; coffee sold for espresso preparation may not fit the same routine.
The NHS advises trying not to have more than 300mg of caffeine a day while breastfeeding and gives 140mg for a mug of filter coffee as an illustrative amount. Tea, chocolate, energy drinks and soft drinks can also contribute to the daily total.
Coffee bags and cup filters avoid measuring grounds for each drink. If you make coffee irregularly, consider whether you will use an opened pack before buying a bulk format.
Choose a format that works with your equipment and routine before comparing flavour descriptions. Treat caffeine as a separate check from roast intensity.
| Priority | What to check | Your needs |
|---|---|---|
| Brewing method | Look for filter-machine or cafetière instructions on ground coffee, or choose a cup-filter format for an individual pour-over. Sainsbury's gives filter-machine instructions for French Style Strength 4 but espresso-maker instructions for Italian Espresso Strength 5. | I use a filter machine or cafetière and want grounds intended for that method, not simply the pack with the higher strength number. |
| Flavour | Read the stated roast and flavour profile rather than treating a strength score as a caffeine figure. Sainsbury's calls French Style Strength 4 medium-strong, earthy and intense; M&S describes its Italian Style cup filters as a rich roast with chocolate and nougat notes. | A bold-tasting cup matters to me, but I want to know what the label says about flavour rather than assume it predicts caffeine content. |
| Caffeine | Check caffeine per prepared serving if you need a product-specific amount. For breastfeeding, the NHS advises trying not to exceed 300mg a day from all sources and uses 140mg for one mug of filter coffee as an illustrative figure. | If I am breastfeeding, I need to consider coffee alongside other caffeinated food and drinks; a strong-flavour label cannot do that calculation for me. |
| Preparation | Compare loose grounds with coffee bags or pre-portioned cup filters. Check whether whole beans need grinding before use, even when a listing names filter brewing. | For a cup made between interruptions, I may prefer a portion that does not require measuring loose grounds or using a grinder. |
| Pack size | Match the quantity to how often you brew. Douwe Egberts Real Filter Coffee comes in a 6 × 1kg professional format, while individual cup filters and coffee bags are portioned for one cup at a time. | We make coffee only occasionally, so I would check whether a large opened pack suits our likely use. |
Roast and intensity descriptions concern the coffee's flavour profile; they do not give milligrams of caffeine in a prepared mug. The NHS expresses its breastfeeding guidance in milligrams from all sources.
If you need to track caffeine, check information for the exact coffee and serving you prepare rather than converting a strength number into an amount.
Sainsbury's labels its Italian Espresso Strength 5 for espresso makers, whereas its French Style Strength 4 includes filter-machine preparation guidance. A higher number does not establish suitability for another brewer.
Read the preparation instructions for your equipment before comparing strength labels.
A 6 × 1kg professional pack is a different commitment from individually portioned filters or coffee bags, particularly in a household that brews irregularly.
Choose a pack size that fits your likely use and follow that product's storage instructions after opening.
A rich or dark flavour description does not identify a coffee as decaf. M&S sells decaf coffee filters as a distinct medium-roast option, with a different stated flavour profile from its Italian Style rich roast.
If you want decaf, look for an explicit decaffeinated label rather than relying on the roast description.
Its own-label range includes differently strength-labelled ground coffees with different preparation instructions.
Its cup-filter range includes Italian Style rich-roast coffee and a separate decaf medium-roast option.
JDE Professional offers Real Filter Coffee in a 6 × 1kg format ground for filter machines.
Lavazza describes different roast profiles and grounds prepared for particular brewing methods across its range.
Sainsbury's lists Taylors of Harrogate Rich Italian Roast among its ground coffees.
Tesco lists Finest ground coffees, including Colombian Supremo and a decaffeinated Colombian option.
These options span ground coffee for filter or cafetière preparation, whole beans that require grinding, and portioned coffee bags or cup filters for individual drinks. Some are convenience-led rather than specifically described as strong.
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Individually wrapped coffee bags suit a cup made without measuring loose grounds. The product description calls this a dark slow roast with hazelnut and caramel notes; it is a coffee-bag format, not ground coffee specified for a filter machine or cafetière.
If you need to track caffeine, check the amount for your prepared cup rather than inferring it from the roast.
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The listing names cafetière and filter brewing and describes a No. 5 dark roast. It identifies the contents as whole beans, so you will need to grind them before using either method; check that this extra step suits your routine.
The roast number does not give a caffeine amount per mug.
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Each 10g filter bag is intended to hang over a cup for an individual pour-over, avoiding the need to measure from a larger pack. The description gives chocolate and nutty notes but does not establish a strong or extra-bold flavour profile.
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This ground coffee is described for filter and French-press preparation, making it an option when those are your usual methods. The description says its flavour can range from mild to bold depending on preparation, so the same pack does not promise an equally strong result with every brew.
Check caffeine per prepared cup separately if you need that figure.
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One-cup filters offer a portioned way to prepare coffee without measuring loose grounds. The description calls the coffee medium-bodied with a rich aroma; choose it for the format rather than assuming it has a strong or extra-bold flavour.
A strength or intensity description cannot tell you how many milligrams of caffeine are in your mug. Douwe Egberts uses intensity to describe flavour and body, while the NHS expresses its caffeine guidance in milligrams; check the amount for the coffee and serving you prepare if you need a figure.
The NHS advises trying not to have more than 300mg of caffeine a day while breastfeeding. It gives 140mg for one mug of filter coffee as an illustrative amount; caffeine from tea, chocolate, energy drinks and soft drinks also counts towards the daily total.
Sainsbury's gives filter-machine preparation instructions for its Fairtrade French Style Strength 4 ground coffee. JDE Professional also describes Douwe Egberts Real Filter Coffee as ground for filter machines, though its 6 × 1kg pack is aimed at larger-volume use.
Choose by how often you brew and how much preparation you want per cup. Douwe Egberts Real Filter Coffee comes in a 6 × 1kg professional format; pre-portioned cup filters reduce measuring for individual drinks. Follow the storage instructions on whichever pack you open.