Coffee Types For Making Espresso

Quick answer

• Espresso requires finely ground, fresh coffee beans roasted specifically for espresso.
• While you can technically grind any coffee bean and attempt to brew espresso, the results will likely be poor.
• Pre-ground coffee, especially if not ground for espresso, will not produce good results.
• Overly dark or oily beans can clog espresso machines and lead to bitter shots.
• Lighter roasts might not extract properly under espresso pressure, resulting in sourness.
• For the best espresso, use whole beans roasted within the last 2-4 weeks and grind them just before brewing.

For the best espresso, use whole beans roasted within the last 2-4 weeks and grind them just before brewing. High-quality espresso coffee beans are key to a great shot.

Lavazza Super Crema Whole Bean Coffee, Medium Espresso Roast, Arabica and Robusta Blend, 2.2 lb Bag, Package May Vary (Pack of 1)

• SUPER CREMA: A 2.2 lb whole bean coffee bag ideal for espresso preparation
• INTENSITY AND ROAST: This full-bodied medium roast offers a bold and creamy finish
• BLEND: Made from Arabica and Robusta beans, this naturally caffeinated blend is sourced from 15 coffee-growing countries around the world
• PREPARATION: Ideal for espresso preparation.
• BREWING GUIDE FOR SINGLE ESPRESSO: 0.28 oz of ground espresso delivers a 1 oz espresso shot

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Who this is for

• Home baristas looking to elevate their espresso game.
• Anyone curious about why their espresso doesn’t taste like it does at a coffee shop.
• Individuals who have an espresso machine and want to understand the role of coffee beans.

What to check first

Brewer type and filter type

Most espresso machines use a portafilter that holds a metal basket. The basket’s size (e.g., single, double shot) and design (e.g., pressurized vs. non-pressurized) play a role. Forcing espresso-style coffee through a drip brewer with a paper filter will not yield espresso. Ensure you’re using an actual espresso machine and the correct portafilter setup.

Water quality and temperature

Espresso is over 98% water, so its quality is paramount. Tap water with high mineral content can lead to scale buildup in your machine and affect taste. Filtered water is generally recommended. The ideal brewing temperature for espresso is typically between 195°F and 205°F (90°C to 96°C). If your machine doesn’t have precise temperature control, consult its manual for recommended settings or preheating times.

Grind size and coffee freshness

This is arguably the most critical factor for espresso. Coffee beans for espresso should be ground very finely, often described as being the consistency of powdered sugar or slightly coarser. Freshness is also key; whole beans roasted within the last 2-4 weeks will produce the best flavor. Older beans lose volatile aromatics, and pre-ground coffee quickly loses its potency.

Coffee-to-water ratio

A standard starting point for espresso is a ratio between 1:1.5 and 1:2. This means for every gram of dry coffee grounds, you’ll aim for 1.5 to 2 grams of liquid espresso in your cup. For example, using 18 grams of coffee grounds to yield 36 grams of espresso. Adjusting this ratio can significantly impact the strength and flavor profile of your shot.

Cleanliness/descale status

A dirty espresso machine will produce bitter, off-tasting coffee. Regularly cleaning your portafilter, group head, and steam wand is essential. Descaling removes mineral buildup that can affect water flow, temperature, and taste. Most manufacturers recommend descaling every 1-3 months, depending on water hardness and usage. Always follow your machine’s specific cleaning and descaling instructions.

Step-by-step (brew workflow)

1. Gather your equipment: Have your espresso machine, portafilter, grinder, fresh coffee beans, scale, and espresso cup ready.

• What “good” looks like: Everything is clean, within reach, and ready to go.
• Common mistake: Starting the process before realizing you’re missing a key component or that the machine isn’t fully heated.
• Avoid it by: Doing a quick visual check and ensuring your machine has been on and heating for at least 15-20 minutes.

2. Weigh your whole beans: Use a digital scale to measure the precise amount of coffee beans for your desired dose (e.g., 18 grams for a double shot).

• What “good” looks like: An accurate weight measurement on your scale.
• Common mistake: Eyeballing the amount or using a volumetric scoop, which is inconsistent.
• Avoid it by: Always using a scale for both coffee grounds and liquid espresso yield.

3. Grind your coffee beans: Grind the weighed beans to a very fine consistency, suitable for espresso.

• What “good” looks like: A uniform, fine powder, like table salt or slightly finer.
• Common mistake: Grinding too coarse (leads to watery, sour espresso) or too fine (leads to bitter, choked espresso).
• Avoid it by: Using a quality burr grinder specifically designed for espresso and making small adjustments based on your shot’s extraction time.

4. Dose the portafilter: Transfer the freshly ground coffee into the portafilter basket.

• What “good” looks like: An even distribution of grounds with no significant gaps or clumps.
• Common mistake: Uneven distribution, leading to channeling (water finding paths of least resistance).
• Avoid it by: Gently tapping the portafilter on a counter or using a distribution tool to level the grounds.

5. Tamp the grounds: Apply firm, even pressure to compress the coffee grounds into a level puck.

• What “good” looks like: A flat, polished surface with no visible cracks or unevenness.
• Common mistake: Tamping too lightly (under-extraction) or unevenly (channeling).
• Avoid it by: Using a calibrated tamper for consistent pressure (around 30 lbs is a common target) and ensuring the puck is perfectly level.

6. Clean the portafilter rim: Wipe away any stray grounds from the rim of the portafilter.

• What “good” looks like: A clean rim, ensuring a good seal with the group head.
• Common mistake: Leaving grounds on the rim, which can interfere with the seal and lead to leaks.
• Avoid it by: Using a dry cloth or brush to quickly clear the rim.

7. Flush the group head: Briefly run hot water through the group head before inserting the portafilter.

• What “good” looks like: A brief stream of hot water, clearing old grounds and stabilizing temperature.
• Common mistake: Skipping this step, which can lead to temperature shock and stale coffee residue.
• Avoid it by: Making it a habit before every shot to ensure optimal temperature and cleanliness.

8. Lock in the portafilter: Insert the portafilter into the group head and lock it securely.

• What “good” looks like: A snug fit, with the portafilter handle positioned correctly.
• Common mistake: Not locking it in tightly, which can cause the portafilter to dislodge during brewing.
• Avoid it by: Applying firm pressure until it’s securely seated.

9. Start the brew cycle: Immediately begin the extraction process by pressing the brew button.

• What “good” looks like: The machine starts pumping water through the coffee.
• Common mistake: Letting the portafilter sit in the hot group head for too long before brewing, which can “cook” the grounds.
• Avoid it by: Starting the brew cycle within seconds of locking in the portafilter.

10. Monitor the extraction: Watch the espresso stream. It should start as dark, thick drips, then become a steady, syrupy flow that gradually lightens.

• What “good” looks like: A consistent, honey-like stream with a rich crema on top.
• Common mistake: The espresso either gushes out too quickly (under-extracted, sour) or drips out too slowly/chokes (over-extracted, bitter).
• Avoid it by: Timing your shot and adjusting your grind size. Aim for 25-30 seconds for a typical double shot.

11. Stop the brew cycle: Stop the extraction when you reach your target liquid espresso yield (e.g., 36 grams for an 18-gram dose).

• What “good” looks like: Reaching your desired weight/volume within the target time frame.
• Common mistake: Over-extracting (shot becomes watery and bitter) or under-extracting (shot is too small and weak).
• Avoid it by: Using a scale under your cup and stopping the shot precisely when the target yield is reached.

12. Serve and clean: Serve your espresso immediately and then knock out the used coffee puck and clean your portafilter and group head.

• What “good” looks like: A delicious shot of espresso and a clean workspace.
• Common mistake: Leaving the used puck in the portafilter or not cleaning the machine, leading to stale flavors and buildup.
• Avoid it by: Making cleaning an immediate part of your workflow after each shot.

Common mistakes (and what happens if you ignore them)

Decision rules (simple if/then)

• If your espresso tastes sour, then your grind is likely too coarse, or your water temperature is too low, because these lead to under-extraction.
• If your espresso tastes bitter, then your grind is likely too fine, or your brew time is too long, because these lead to over-extraction.
• If your espresso flows too quickly (less than 20 seconds), then your grind is too coarse or your dose is too low, because it’s not offering enough resistance.
• If your espresso drips very slowly or chokes, then your grind is too fine or your dose is too high, because it’s creating too much resistance.
• If your espresso has little to no crema, then your beans are likely stale or not roasted for espresso, because fresh, properly roasted beans are essential for crema.
• If your espresso shot is watery and weak, then your coffee-to-water ratio might be too high (too much water for the coffee), or your extraction was too short.
• If you see spurts of water coming from the side of the puck during extraction, then you have channeling, meaning your grounds weren’t distributed or tamped evenly.
• If your espresso machine is making strange noises or the brew pressure seems low, then your machine likely needs descaling or cleaning.
• If your espresso tastes “off” or unpleasant, even after adjusting grind and ratio, check your water quality; consider using filtered water.
• If your espresso shots are inconsistent from day to day, then your grinder might be producing inconsistent particle sizes, or your tamping technique varies.
• If you’re using a pressurized portafilter basket and still getting poor results, ensure your grind is appropriate for that basket type and that your beans are reasonably fresh.
• If you’re using a non-pressurized portafilter basket and struggling, focus on dialing in your grind size and tamping technique first, as these are most critical.

FAQ

Can I use any coffee beans to make espresso?

While you can technically grind almost any coffee bean and try to brew it, the best results come from beans roasted specifically for espresso. These beans are usually medium to dark roasts, finely ground, and fresh. Using beans not suited for espresso will likely result in a less-than-ideal shot.

What is the best type of coffee roast for espresso?

Medium to dark roasts are generally preferred for espresso. They tend to have a more robust flavor, lower acidity, and develop a richer crema. Lighter roasts can be used, but they require more precise temperature and grind control to avoid sourness.

How fresh do coffee beans need to be for espresso?

For optimal flavor and crema, coffee beans should be used within 2-4 weeks of their roast date. As beans age, they lose their volatile aromatic compounds, leading to a flatter taste and less crema.

What happens if I use pre-ground coffee for espresso?

Pre-ground coffee loses its freshness very quickly. It’s often ground too inconsistently or for a different brewing method (like drip coffee). Using it for espresso will likely result in a weak, stale shot with little to no crema.

Is it okay to use oily beans for espresso?

Very oily beans can sometimes clog espresso machine components, especially grinders. While some dark roasts are naturally a bit oily, excessively shiny or wet-feeling beans might indicate they are past their prime or roasted too dark, potentially leading to bitter flavors.

How important is the grind size for espresso?

Grind size is critical. Espresso requires a very fine grind to create resistance against the high pressure of the machine. If the grind is too coarse, water will pass through too quickly, resulting in under-extraction (sourness). If it’s too fine, water may not pass through at all, leading to over-extraction (bitterness).

Can I use my drip coffee maker to make espresso?

No, drip coffee makers cannot produce true espresso. Espresso requires high pressure (typically 9 bars) and a fine grind to extract a concentrated shot. Drip machines operate at much lower pressure and use coarser grounds.

What is “crema” and why is it important?

Crema is the reddish-brown foam that forms on top of a well-pulled espresso shot. It’s composed of emulsified oils and CO2. Crema contributes to the aroma, mouthfeel, and flavor complexity of espresso and is a sign of a fresh, properly extracted shot.

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

• Specific espresso machine maintenance schedules and detailed cleaning procedures.
• Next: Consult your espresso machine’s user manual for precise instructions.
• Advanced espresso techniques like pre-infusion, temperature surfing, or specific pressure profiling.
• Next: Explore resources dedicated to advanced home barista techniques and machine capabilities.
• Detailed comparisons of different espresso grinder burr types (conical vs. flat) or specific grinder models.
• Next: Research coffee grinder reviews and technical specifications.
• The science behind coffee bean origins, varietals, and their impact on espresso flavor profiles.
• Next: Dive into coffee sourcing information and taste profiles of different origins.
• Recipes for espresso-based drinks like lattes, cappuccinos, or americanos.
• Next: Look for guides on milk steaming and classic espresso beverage preparation.