Capsule Filter Machines

Capsule filter machines are single-serve coffee makers that push hot water through one pre-portioned pod, pad or capsule of ground coffee at low pressure, giving you a mug of filter-style coffee rather than espresso. They’re also called coffee pod machines or pad machines, and the best-known are Senseo, with its soft paper pads, and Tassimo, with its barcoded T-Discs. This page covers how they work, how they differ from drip and espresso, what’s in a pod, cup sizes, cleaning and what to do with the empties. Keurig has its own page, and so do Nespresso capsules.

The short version

• Low pressure, filter-style coffee. Philips lists the Senseo Original pump at 1 bar; espresso pods are made for 10 to 15 bar.
• One pod per cup. A Senseo pad holds about 7 g of coffee, and each pad makes one cup.
• Fast: 30 seconds for one Senseo cup, under a minute for two.
• Tassimo reads a barcode on each T-Disc to set water, temperature and brew time.
• Descale regularly: Philips says every 3 months, with citric acid only.
• Paper pads compost; plastic capsules are harder. Check what your pod is made of.

What is a capsule filter machine?

It’s the single-cup cousin of the automatic drip coffee maker. Instead of a basket of loose coffee and a paper filter, the coffee comes sealed in its own filter: a paper pad, or a plastic capsule with a filter inside. The machine heats a small amount of water, pumps it through the pod, and the coffee runs straight into your cup.

Wikipedia draws a useful line between the two main formats:

• Pods or pads are ground coffee sealed in their own paper filter, like a flat tea bag. Senseo pads are the classic example.
• Capsules pack the coffee in plastic or aluminium, and are usually designed for one brand’s machines only. Tassimo T-Discs, K-Cups and Nespresso capsules are all capsules.

Pads made for one system are interchangeable between many brands and machines, Wikipedia notes, while capsule systems tend to lock you into one supplier.

How is it different from drip coffee and espresso?

The difference is pressure, and what it does to the cup.

	Drip coffee maker	Capsule filter machine	Espresso pod machine
Coffee	Loose, in a basket	One sealed pod or capsule	One pod or capsule
Pressure	None, water drips by gravity	Low: Philips lists 1 bar for Senseo	High: ESE pods are made for 10 to 15 bar
Cup	A jug of filter coffee	One or two mugs of filter-style coffee	A small, strong espresso
Time	Several minutes for a jug	About 30 seconds a cup (Senseo)	Under a minute

German Wikipedia describes how a Senseo works: it heats a whole portion of water in a small boiler first, then a pump pushes it through the pad at over 90 °C. A drip machine, by contrast, pushes water up to the filter continuously as it boils. Philips says the Senseo’s water is “pumped from the boiler to the coffee pad”.

Sources differ slightly on the exact pressure. Philips’s own specification sheets list 1 bar for the Senseo Original, German Wikipedia gives about 1.4 bar, and its pad article says simply under 3 bar. All of them agree it’s nowhere near espresso.

That low pressure is why a Senseo can’t make true espresso. The foam on top looks like crema, and Philips markets “Crema Plus”, but German Wikipedia describes it as simply foamed coffee made in a special foaming chamber.

How much coffee is in a pod, and how big is the cup?

Each system portions differently. Here’s what the makers and reference sources say:

System	Coffee per pod	Cup size	Pressure
Senseo pad	About 7 g (German Wikipedia)	One pad per cup; 1-cup or 2-cup holder	1 bar (Philips)
Tassimo T-Disc	Varies by drink	Small 50–60 ml, medium 120–160 ml, large 215–285 ml (German Wikipedia)	Lower than espresso machines
Dolce Gusto Americano	A 16-capsule box weighs 160 g (Nestlé Professional)	230 ml long cup (Nestlé)	Up to 15 bar (Nestlé)

The 7 g Senseo dose is, as German Wikipedia points out, roughly what’s usually recommended for one cup of ordinary filter coffee. If your Senseo coffee tastes thin, the fix is a smaller cup, not a longer brew: the coffee in the pad is fixed, so more water just means weaker coffee. Philips’s HD7806 has a brew stop button for exactly that.

Nescafé Dolce Gusto is worth a note here because people often lump it in with filter pod machines. It does make long, mug-sized “Americano” and “Grande” cups, but Nestlé describes its machines as high-pressure, up to 15 bar, so the brewing is closer to an espresso machine making a long drink. For more on that style, see the lungo.

How does a Senseo work?

Senseo, from Philips and Douwe Egberts, is the best-known pad machine. The basics, from Philips’s specifications:

1. Fill the tank (0.7 to 0.75 litres on the Original models).
2. Choose the holder: the 1-cup holder for one pad, or the deeper 2-cup holder for two.
3. Close the lid and press the 1-cup or 2-cup button.
4. Wait 30 seconds for one cup, or under a minute for two.

The Senseo Original takes cups up to 100 mm tall and switches itself off after a set time (30 minutes on the HD7806, 60 on the HD7810). German Wikipedia mentions a separate espresso pad holder, used with espresso pads, which raises the pressure and gives a smaller drink of about 80 ml. It’s still not a true espresso machine.

How does a Tassimo work?

Tassimo, developed by Kraft Foods and now owned by JDE Peet’s (Kraft Heinz in North America), uses plastic capsules called T-Discs. According to Wikipedia:

• A barcode on top of each T-Disc tells the machine how to brew: it changes the water temperature, the amount of water, and the brew time and strength.
• That lets one machine make filter-style coffee, espresso-style drinks, tea, hot chocolate and milky drinks. Milk discs use UHT milk.
• A brew takes 30 to 60 seconds.

German Wikipedia adds two details. The capsule itself is the brewing chamber, with a filter fleece inside for ground-coffee drinks. And unusually, water goes in and the drink comes out from the same side, through the foil, which the machine pierces from below. Tassimo calls this “inverse flow”. German Wikipedia also notes that Tassimo brews at lower pressure than classic espresso machines.

How do you clean and descale a pod machine?

Pod machines don’t need their baskets washed, but limescale still builds up inside. Follow your own model’s manual; here’s what the makers say.

Machine	How often	How
Senseo	Every 3 months, or when the CALC light comes on (usually after about 400 cups)	Citric-acid descalers only, such as Philips CA6520 or CA6521
Tassimo	When the machine signals it	A barcoded service disc starts the cleaning and descaling programmes

Philips is firm that you should never use white vinegar or mineral acids such as sulphuric, hydrochloric, sulfamic or acetic acid on a Senseo, because they damage the machine. It says regular descaling improves the taste, volume and temperature of the coffee and makes the machine quieter. On Original Plus models, both cup buttons flash together when it’s time.

For Tassimo, retailer KaffeK explains that the service disc goes in the capsule holder barcode-down; the machine reads it and runs its cleaning programme. For descaling, it says you add a descaling tablet to the tank and hold the brew button for five seconds. Hard water means more limescale, so descale more often if your water is hard.

Are coffee pods recyclable?

It depends what they’re made of.

• Paper pads (Senseo-style): German Wikipedia says the filter is two layers of cellulose heat-pressed together without glue, so it’s compostable. The English article calls paper pods fully biodegradable.
• Plastic and aluminium capsules: Wikipedia says these either aren’t recyclable or need extra processing to separate the container from the coffee. German Wikipedia notes T-Discs are criticised for not being compostable.
• Take-back schemes: in Canada, Tassimo and TerraCycle launched a free mail-back envelope programme for all used T-Discs in 2023.
• Refillables: reusable filters such as the Coffeeduck let you use your own ground coffee in a Senseo, according to Wikipedia.

Environmental criticism has been strong: in early 2016 the German city of Hamburg banned coffee capsules from state-run buildings, Wikipedia reports.

A short history of pod filter machines

• 1958: the Flemish Rombouts company launches its pre-filled One Cup Coffee Filter at the Brussels World Exhibition, a single-use drip filter that sits over the cup, according to Wikipedia. It’s an ancestor of today’s drip bags.
• 2001: Philips and Douwe Egberts launch Senseo in the Netherlands in February. German Wikipedia says the pads built on earlier illy espresso pads.
• 2004: Tassimo is introduced in France, per English Wikipedia (German Wikipedia gives 2005). The first machines were made by Saeco and sold by Braun.
• 2005: according to a Philips press release cited by Wikipedia, ten million Senseo machines and four billion pads have been sold worldwide.
• 2006: the European Patent Office revokes Sara Lee/DE’s patent on the Senseo pad and holder, opening the door to compatible pads from other roasters.
• 2008: Bosch takes over making Tassimo machines.
• 2011: Sara Lee stops selling Senseo in North America; a US model returns in 2018.

General guidance only. Follow your machine’s manual for cleaning and descaling, use only the descaler the maker recommends, and take care with hot water and used pods.

Capsule filter machines vs other methods

• K-Cup pod brewers: Keurig’s plastic filter pods, the American take on single-serve filter coffee.
• Nespresso Original: high-pressure aluminium capsules for espresso.
• ESE paper pods: smaller 44 mm paper pods for espresso machines.
• Automatic drip: loose coffee, a jug at a time.
• Japanese drip bag: single-serve filter coffee with just a kettle.
• Coffee bags: steep a bag in your mug, like tea.

Explore every machine method in the machine chapter.