To pull the best espresso shot, focus on a consistent process: use fresh beans, grind them fine, dose evenly (e.g., 18g), distribute well, tamp level with firm pressure (10-12kg), and aim for a 1:2 ratio (e.g., 36g out) in 25-30 seconds by adjusting grind size. Flush the group head, preheat your cup, lock in the portafilter, start the shot and timer simultaneously, and stop when you hit your target yield, making small grind adjustments to dial in the timing and taste.
If your shots form a tight group, even if they are not around the bulls eye, you are a good shot. If the shots are all over the target but centered on the bull's eye, you are a poor shot or maybe the weapon shoots poorly.
What is a 2:1 Ratio? In simple terms, a 2:1 ratio means you're extracting twice as much liquid espresso as the weight of the coffee grounds you use. For example: 18 grams of ground coffee in = 36 grams of espresso out.
As a guide for the best coffee extraction, the rate of extraction should be 25-30ml of coffee extracted in 25-30 seconds of brewing. If your shots fall within this time frame the extraction is generally correct.
The "espresso 30-second rule" is a widely used guideline suggesting an ideal espresso shot should extract in 25-30 seconds for a balanced flavor, acting as a starting point for dialing in your grind size and brew ratio, though taste remains the ultimate judge, as factors like roast level and machine type can alter this. Timing usually starts when the pump activates, but some prefer from the first drip; shots under 20 seconds are often sour (under-extracted), while over 35 seconds can be bitter (over-extracted).
The Golden Rule
A reliable method for judging your extraction times is by following the “Golden Rule” which states that a double shot of espresso should result in about 2-2.5 fluid oz and take about 20-25 seconds to extract.
The 4 M's of Espresso — Miscela, Macinatura, Macchina, Mano. (That's blend, grind, machine, and hand — for the non-Italian speakers.) Let's break it down the 787 Coffee way, so you can make better coffee at home, learn more about the process, and fall even deeper in love with what's in your cup.
Mistake #1: Using Old Coffee Beans. Mistake #2: Using the Wrong Coffee Grind. Mistake #3: Forgetting to Clean Your Espresso Machine. Mistake #4: Tamping Your Coffee Incorrectly. Mistake #5: Not Preheating Your Machine and Cups.
So, while it is reported that a doppio was 60ml of liquid espresso, we need a clear indication of how much ground coffee typically went into that. A "double" basket is currently sized for 16-18 grams of ground coffee. It used to be 14 grams but has since expanded.
The 15-15-15 coffee rule, also known as Babbie's Rule, is a guideline for peak coffee freshness: use green beans within 15 months of harvest, roasted beans within 15 days of roasting, and grind beans no more than 15 minutes before brewing to maximize flavor and aroma. This rule highlights how quickly coffee degrades from oxidation, emphasizing consuming it at its freshest from farm to cup to prevent staleness.
Timing is everything in espresso. For a double shot (approximately 2 oz), aim for an extraction time of 18-22 seconds. If your shot pulls too fast (under 18 seconds), you may need to adjust the grind finer or increase the dose.
A 30ml single espresso should extract between 15 - 20 seconds. A 60ml double espresso should extract between 27 – 35 seconds.
For there to be a good layer of crema on the espresso, the coffee must be emulsified at the right temperature and pressure. Extraction time is also key; making a coffee in twenty seconds or in more than thirty seconds will influence the quality and existence of the crema.
The 80/20 rule for coffee (Pareto Principle) means 80% of your flavor comes from 20% of the effort, focusing your energy on key variables like fresh, quality beans, proper grind size, good water, and correct ratio, rather than obsessing over every minor detail. It suggests prioritizing high-quality beans and core techniques to get the best flavor, recognizing that superior beans in a decent brew beat average beans in a perfect brew, with the remaining 20% of effort refining the process for a great cup.
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Great espresso happens when everything you use is fresh and of good quality. Coffee roasted within the last two weeks. Fresh, clean and filtered water. Clean grouphead and dispersion screen (that screen up where your portafilter locks into).
PRINCIPLES OF EXTRACTION: THE 3 T'S
There are three key variables in the brewing process that you have to understand and use to create the perfect brew: temperature, turbulence, and time. These three T's build on one another and work together to make or break your brew.
What grind size is best for espresso? Espresso requires a very fine grind, similar in texture to table salt. This creates enough resistance for water at 9 bars of pressure to extract properly, producing a rich, balanced shot with crema.
Espresso extraction should produce a double espresso of 50-60ml in 25-30 seconds or a single espresso of 25-30ml in the same time. Before you connect the filterholder (loaded with coffee) to your espresso machine it is a good idea to to flush some water from the machine.
When the body is immune to caffeine, consuming it will cause the body to remain tired and sleepy. Caffeine tolerance levels can change due to several factors such as age, body weight, and medications. Coffee with a high sugar content and consuming it more than once will cause fatigue.
What is the Italian rule for espresso? One of the key rules for drinking espresso in Italy is to enjoy it quickly, often standing at the bar. In Italy, there is also an unwritten rule to avoid ordering milk-based coffee drinks after 11 a.m. Read how to drink espresso the Italian way here.
The healthiest coffee is organic, single-origin and free from additives. Look for beans that are freshly roasted and certified organic or fair trade to minimize exposure to chemicals and support ethical farming.
To pull an even shot, you need a level coffee bed. Once you grind your dose into your portafilter, gently tap the sides of the portafilter a few times to distribute the coffee until it appears flat. Keep this to a minimum, as you don't want to cause a crack in the coffee bed. Once it looks level, it's time to tamp.