Brewing Black Coffee With an Espresso Machine

Quick answer

• Use your espresso machine’s hot water dispenser.
• Aim for a coarser grind than espresso, closer to drip.
• Use a pour-over cone or a French press with hot water from the machine.
• Stick to a standard coffee-to-water ratio, around 1:15 to 1:17.
• Pre-heat your mug.
• Don’t try to pull “black coffee” through the espresso group head.

Who this is for

• Coffee lovers who own an espresso machine but want a simple black coffee.
• Campers or travelers who have an espresso machine and limited other gear.
• Anyone curious about using their espresso machine’s features beyond espresso shots.

What to check first

Brewer type and filter type

You’re not brewing espresso here, so your espresso machine’s portafilter isn’t the tool. Think of the machine as a high-end hot water kettle. You’ll need a separate brewing device, like a pour-over cone (V60, Chemex, Kalita) with its specific paper or metal filter, or a French press. The filter type matters for body and clarity. Paper filters trap more oils for a cleaner cup; metal filters let more through for a richer mouthfeel.

You’ll need a separate brewing device, like a pour-over cone with its specific paper or metal filter, or a French press. Consider a pour over coffee maker for a clean and bright cup.

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Water quality and temperature

Good coffee starts with good water. If your tap water tastes off, your coffee will too. Filtered water is usually the way to go. Your espresso machine’s hot water dispenser should get the water plenty hot, ideally between 195°F and 205°F. Too cool, and you’ll get sour, underdeveloped coffee. Too hot, and it can taste bitter. Most machines hit this sweet spot.

Grind size and coffee freshness

This is key. You’re not making espresso, so you need a coarser grind. Think medium to medium-coarse, like coarse sand. Too fine, and the water will struggle to pass through, leading to over-extraction and bitterness. Too coarse, and it’ll be weak and sour. Freshly roasted and ground beans make a huge difference. Grind right before you brew if you can.

Coffee-to-water ratio

A good starting point for black coffee is a ratio between 1:15 and 1:17. That means for every gram of coffee, use 15 to 17 grams (or milliliters) of water. For example, 20 grams of coffee to 300-340 grams of water. Adjust to your taste. Too much coffee means it might be too strong; too little, and it’ll be weak.

Cleanliness/descale status

An espresso machine is a complex piece of gear. If it hasn’t been descaled or cleaned regularly, old coffee oils can make your hot water taste funky. This will absolutely ruin your black coffee. Check your machine’s manual for descaling and cleaning procedures. A clean machine means clean-tasting water.

Step-by-step (brew workflow)

1. Heat water: Activate your espresso machine’s hot water dispenser.

• Good looks like: Steady stream of hot water, not boiling violently.
• Common mistake: Forgetting to turn on the machine or waiting too long. Avoid this by turning it on early.

2. Prepare brewer: Place your pour-over cone on your mug or server, or assemble your French press.

• Good looks like: Brewer is stable and ready for grounds.
• Common mistake: Not placing the brewer on a stable surface. Make sure it won’t tip over.

3. Rinse filter (if using paper): Place the paper filter in your pour-over cone and rinse it with hot water. Discard the rinse water.

• Good looks like: Filter is wet, no paper taste.
• Common mistake: Not rinsing. This leaves a papery taste in your coffee.

4. Grind coffee: Weigh your whole beans and grind them to a medium to medium-coarse consistency.

• Good looks like: Grounds look like coarse sand.
• Common mistake: Using espresso-fine grounds. This will clog your brewer.

5. Add coffee grounds: Place the ground coffee into your prepared brewer.

• Good looks like: Even bed of grounds.
• Common mistake: Not leveling the grounds. This can lead to uneven extraction.

6. Bloom the coffee: Pour just enough hot water from the machine to saturate the grounds. Wait about 30 seconds.

• Good looks like: Grounds puff up and release CO2 (bubbles).
• Common mistake: Skipping the bloom. This helps release gases for a more even extraction.

7. Pour water (pour-over): Slowly pour the remaining hot water over the grounds in a controlled, circular motion. Aim to finish within 2-3 minutes.

• Good looks like: Steady stream, water level stays consistent.
• Common mistake: Pouring too fast or all at once. This can cause channeling and weak spots.

8. Steep (French press): Pour the remaining hot water over the grounds, stir gently, and place the lid on without pressing. Steep for about 4 minutes.

• Good looks like: Coffee steeping evenly.
• Common mistake: Pressing too soon or too hard. This can lead to sediment.

9. Press plunger (French press): Slowly and steadily press the plunger all the way down.

• Good looks like: Smooth, even resistance.
• Common mistake: Pressing too fast. This can force fines through the filter.

10. Serve: Pour your brewed coffee into your pre-heated mug immediately.

• Good looks like: Hot, aromatic coffee.
• Common mistake: Letting it sit on the grounds. This leads to over-extraction and bitterness.

Common mistakes (and what happens if you ignore them)

Decision rules (simple if/then)

• If your coffee tastes sour, then increase your water temperature slightly (if possible) or grind finer, because sourness often indicates under-extraction.
• If your coffee tastes bitter, then decrease your water temperature slightly or grind coarser, because bitterness often indicates over-extraction.
• If your coffee tastes weak and watery, then use more coffee grounds or a finer grind, because you’re likely under-dosing or under-extracting.
• If your coffee tastes too strong, then use fewer coffee grounds or a coarser grind, because you’re likely over-dosing or over-extracting.
• If you’re using a paper filter and the brew is too slow, then your grind is likely too fine, because paper filters have smaller pores.
• If you’re using a metal filter and the brew is too fast, then your grind is likely too coarse, because metal filters have larger pores.
• If your hot water dispenser isn’t hot enough, then check your machine’s manual for troubleshooting, because optimal brewing temperature is crucial.
• If your coffee has a papery taste, then you didn’t rinse your paper filter enough, because rinsing removes the papery residue.
• If you want a cleaner cup with less body, then use a paper filter, because paper traps more oils and fines.
• If you want a richer cup with more body, then use a metal filter or a French press, because these allow more oils and fines into the final brew.

FAQ

Can I just put coffee grounds in the portafilter and run hot water through it?

No, that’s not how it works for black coffee. The portafilter and group head are designed for pressurized espresso. Trying to force hot water through it without espresso grounds and pressure will likely result in a mess and poor coffee. Use the machine’s hot water dispenser for a separate brewing method.

How coarse should the grind be?

Think of it like coarse sand or sea salt. Definitely coarser than espresso grounds, but finer than what you’d use for a very coarse French press. It should allow water to flow through at a reasonable rate without clogging.

Is the hot water from my espresso machine hot enough?

Most espresso machines are designed to heat water to the optimal brewing range, typically 195-205°F. If you suspect yours isn’t, check your machine’s manual or contact the manufacturer. Brewing with water that’s too cool will lead to underdeveloped coffee.

What if my coffee tastes like burnt plastic?

This usually means your espresso machine needs cleaning. Old coffee oils and mineral buildup can affect the taste of the water dispensed. Follow your machine’s cleaning and descaling instructions.

Can I use my espresso machine’s steam wand for hot water?

No. The steam wand produces steam, not hot water. Using it for brewing would be dangerous and would not produce good coffee. Stick to the dedicated hot water dispenser.

How much coffee should I use?

A good starting point is a 1:15 to 1:17 ratio of coffee to water. For example, 20 grams of coffee for about 300-340 ml (or grams) of water. Adjust this based on your personal taste preferences.

What’s the difference between using a pour-over cone and a French press with this method?

A pour-over cone with a paper filter will give you a cleaner, brighter cup with less body. A French press will give you a richer, fuller-bodied cup because its metal filter allows more oils and fine particles into the coffee.

What this page does NOT cover (and where to go next)

• Making espresso drinks like lattes or cappuccinos.
• Detailed maintenance and repair of espresso machines.
• Specific recommendations for pour-over cones or French presses.
• Advanced brewing techniques like inverted pour-overs or specific bloom patterns.
• Water chemistry and its impact on coffee flavor profiles.