How do you make delicious espresso shots that are consistent? You’ve come to the right place! This guide will help you to understand how to make the perfect espresso. The guide will take you through each step. We explore every aspect of making a great cup of coffee, from the extraction time to the grind.
This article will help you improve your espresso-making skills, whether you are a barista looking to perfect your craft or a coffee lover eager to learn the science behind your favorite brew. Let’s explore the details that make every espresso shot a masterpiece.
Use Fresh Coffee
High-quality coffee beans age quickly and lose their flavor. They are only “fresh” and full of flavor for a couple of weeks after roasting. To make the best cup, use fresh coffee beans that are stored properly and ground at the time of preparation. This article will explain more about how to choose the best coffee beans. Learn more about how to keep coffee. You can also learn about how to select the best coffee grinder.
EXTRACTION TIME
Use a single 9-11g bag:
The extraction time for a 30ml single espresso is between 27 and 35 seconds.
Use a double 18-21g Basket:
The extraction time for a 30ml single espresso is between 15 and 20 seconds.
Double espresso 60ml should be extracted between 27 and 35 seconds.
DIFFERENT SHOOT VOLUMES
Start with the basics… Different cup sizes can accommodate other shot volumes.
For an 8oz shot, the industry standard is 30ml. A 12oz shot requires 60ml, and a 16oz shot requires 90ml.
The maximum size of a shot from a double basket is 60. So, for a 16oz cup, you would pour a 30ml into the cup and then another 60ml. You will need to fill the handle with two different doses of espresso.
Commercial espresso machines are usually volumetric, which means that the buttons are programmed to deliver a specific amount of water. A single shot will be programmed (generally between 30-40ml), and a double shot will be programmed (60ml).
WHAT IS THE IMPORTANCE OF EXTRACTION TIMES?
One of the best ways to control your espresso’s flavor is by controlling the time that the water comes into contact with the coffee grounds. A portion of the coffee beans is soluble. This means that a part of the bean will dissolve during the extraction. Approximately 18-32% of the beans are soluble. Between 18-22% of the coffee bean dissolves to produce a balanced and tasty shot. Controlling the extraction time controls this, which in turn contains the taste.
A balanced espresso shot is the result of the balance between the Acids (from the coffee), the Oils (from the oil), the Sugar, and the Bitterness (from the bitterness).
If you extract too quickly, the shot will have a high acidity but a low sugar and oil content. The coffee will taste sour (under-extracted) and be thin and watery.
The bitterness of a shot extracted too slowly will overpower the sweetness, and the bright acids are lost, leaving a coffee with smoky and ashy flavors and resulting in an overly bitter taste. (Over extracted).
STEP-BY-STEP DROP OF A SHOT
The espresso machine controls the temperature and volume of water used for the espresso shot. The barista is responsible for maintaining the duration of the espresso shot.
The DDose is the most important factor that determines how long it takes to extract an espresso shot. The other two are the Tamp and Grind. The coffee machine controls only the volume and temperature of water. How the barista handles the dose, tamp pressure and grind will determine the shot time and, thus, the taste of the coffee.
1. THE DOSE
You will put this amount of coffee into your basket on the group handle. This is the most important factor in determining your shot time and the taste of your espresso.
How can I tell how much to use and when? The size of your basket will determine your dose. You should use 11 grams if you’re using a single basket. When using a double-basket, your dose is 21 grams. Weighing your dose is a good way to ensure that it remains consistent.
Why is the dosage important? The amount of coffee ground in the basket will determine the speed at which water is sprayed from the group head and, therefore, your extraction time. If you have too much or too little coffee in your basket, your extraction will be too slow.
You can “Split A Shot” by placing two cups (4oz. or 8oz.) under the double-group handle. Press the 60ml button to extract 2 x 30-ml espresso shots.
2. THE TAMP
After you have the right amount of coffee in your basket, tamping the ground coffee is the next step. The ground coffee is tamped by applying pressure in order to make a level, firm bed for the water. The industry standard is 10-12 kgs of pressure.
i. Pressure
Then, place your hand on top of the handle of the tamper and slide your fingers so that they rest on the ledge of the handle. The tamper should be evenly placed over the dose, with the base of the tamper evenly positioned above the wrist. One firm push is required to force the 10-12 kg pressure into the coffee. The calibrated tamp ensures consistent pressure. You can also use the bathroom scales to practice until you reach 10-12kgs of pressure.
ii. Polish
By gently rotating the tamper, you can polish the coffee. This will ensure an even extraction by leveling the bed of coffee.
iii. Clean
Wipe any coffee grinds that are left on top of the basket or lugs with your hand. This will prevent coffee from building up in the rubber seal inside the group head.
3. THE GRIND
The particle size of ground coffee is called the grind. The size of the ground coffee will influence the speed of extraction. A grind that is too fine can cause over-extraction, while a grind that is too coarse can cause under-extraction.
To maintain consistency in shot times, keep your dose and tamping press the same. Only adjust the grind if you want to change your shot time.
4. LOCKING IT IN
You can lock the handle by moving your hand towards the basket. The handle should be pointing directly at you. Move the handle left to feel the lugs clicking up and in. Bring the handle back around 6 o’clock to make it tight.
Start your timer and drop a 60ml double shot. The espresso should start extracting after 3 to 5 seconds. This is called the infusion and is included in the total shot time.
WHY ADJUST YOUR GRIND?
If your extraction and shot times aren’t where you want them, then it is likely that you will need to adjust your grind. You will get a burnt or bitter taste if you over-extract (because your coffee is too finely ground). Under extracting (because the ground coffee is too coarse) can taste medicinal or grassy. In a busy café, you may have to adjust the grind several times per day. Coffee is a food that degrades with time. It is affected by oxygen, sunlight, and moisture. Your grind may need to be changed as your coffee or the environment ages.
HOW TO Adjust Your Coffee Grinder
You can check your grind before adjusting it by weighing your dDoseout or by checking the puck once the shot is extracted. The puck is the coffee that remains in the handle of the group after extraction. The puck will be smooth, firm, and dry if the basket is dosed correctly. It should leave an impression on your thumb if you press it. The basket will be dry and clean when you knock out the puck. If you have the correct dose but your shot time is too slow or fast, adjust the grind.
The puck will be wet, uneven, and have small holes. This is because the water has been channeled, which means that it has drilled quickly through the coffee instead of slowly extracting. It will also feel very soft to the touch and will easily be pushed into by your finger. Grains will remain in the basket after you have removed the puck. If you underdosed the basket, then increase the dose until it is the correct amount. Only change the grind when the shot time still does not match.
You won’t be left with a thumb impression in the puck if you overdosed your basket. It’s possible that you struggled to lock the group handle in your machine. You may notice a dark brown residue at the bottom of your basket when you remove the puck. This is the coffee oils. If you overdosed on the basket, reduce your dose until it is the right amount. Only change the grind when the shot time still does not match.
HOW DO I CHANGE MY GRIND
Grinders have an adjustable collar (domestic or dials that allow you to adjust the grind.
You adjust the grind by moving the burrs in the grinder. The burrs in the grinder are what grinds the coffee. The closer they are together, the finer it will be.
The top burr moves up and down with the adjustment collar when the collar is moved. Turning the collar counterclockwise makes the grind coarser, and the opposite is true for commercial grinders.
It would be best if you only made small adjustments to the grind, around 0.5-1 notch. A 1 notch change will affect your shot time by approximately 5 seconds.
You must remove any pre-ground coffee from the dosing chamber or the dosing spout after making a grinder adjustment. If you use this coffee, it will not be the finer or coarser ground that you have adjusted.
You can fine-tune the grind to get the desired extraction time by making small adjustments.
Which way?
Clockwise = Coarser
Anti-Clockwise = Finer
How far can you go?
A one-notch adjustment is equivalent to 5 seconds of shot time. Small adjustments are needed on the collar.
It may take several adjustments to get the perfect grind. If the shot still seems too fast or slow, adjust the grind. Repeat until you get your correct shot times.
Signs of a Good Extraction
1. TIME
Time is one of the ways to determine if you are taking a good shot. A timer is simple to use and very reliable. As soon as you press the button, your timer will start. Stop it when the espresso is finished. The shot time includes both the infusion and shot times.
2. THE POUR
What does it look like as you pour the espresso? Does it pour out quickly or slowly? We are looking for a pour called a “mousetail.” Espresso should flow in a continuous stream, thicker at the top, then tapering to a point like a mousetail. Another way to describe it is honey dripping from the back of a teaspoon.
After a few seconds, the espresso will appear dark and almost black. It will then turn into a golden brown pour that will look thick and “oily.” Around the 25-second mark (for 60ml shots), the color will lighten to a pale yellow. This is known as the blonding. This is the normal progression of extraction.
3. THE CREMA
The color of the Crema can identify a well-extracted espresso. The Crema will be a thick dark gold head on top of a black espresso shot. Crema should be between 3-5mm in thickness and is included with the 30ml or 60ml shot. You always measure espresso up to the top layer of Crema.
If your Crema is thin and pale, it could mean that your shot was extracted too fast, your grind may be too coarse, or your basket was underdosed.
4. THE PUCK
When tapped, the puck or biscuit must be dry and firm. It should not leave a lot of residue in the basket. If the puck is wet and soft, you may be underdosing.
3 Reasons to Adjust Your Grinder
1. Weather changes – Since coffee is affected by moisture, weather changes can affect the speed at which the espresso shot is extracted. If it’s very humid or hot, or foggy or rainy, your espresso shots may slow down. By adjusting the grind slightly, you can allow water to pass more easily through the coffee bed and increase the shot time. You may need to adjust the grind as the weather changes throughout the day.
2. Remember that the first five to ten days after roasting, the coffee will be degassing. You may need to adjust the grind as the coffee gets older over the next 2-3 weeks. If you receive a new shipment of coffee with a different roasting date, it may be necessary to adjust your grind in order to compensate for their age.
3. Change the coffee blend – If you change the coffee blend, it may be necessary to adjust your grind. If you change the mix, you’ll have different beans in the grinder. They will be different sizes and moisture levels. If you switch from a blended coffee to a single-origin, it may be necessary to adjust the grind.