What is the best coffee-to-water ratio for an espresso?

The best coffee-to-water ratio for an espresso is 1 to 2. This means that for every gram of coffee, you get about two grams of espresso in your cup. This ratio ensures a full, balanced flavour with the right balance between bitter and sour. Depending on the type of bean and your personal preference, you can adjust the ratio for a softer or more intense espresso.

What exactly does the coffee-to-water ratio mean?

The coffee-to-water ratio indicates how much liquid espresso you get from a certain amount of ground coffee. It’s also called the brew ratio. This ratio determines how much flavour, strength and body your espresso has.

With a ratio of 1 to 2, for example, you use 18 grams of ground coffee and brew 36 grams of espresso. If you use less water (for example 1 to 1.5), you get a stronger, more intense espresso. If you use more water (for example 1 to 3), the espresso becomes lighter and softer in flavour.

By keeping this ratio consistent, you can compare and improve the flavour of your espresso. This way, you get to know your machine and beans better and find the flavour you like the most faster.

What is the ideal ratio for espresso?

The ideal ratio for espresso is 1 to 2. This means you brew about two grams of espresso for every gram of ground coffee.

This ratio is the standard among baristas because it provides a full flavour with the right balance of bitter, sour and sweet. If you want to experiment, you can deviate slightly:

• 1 to 1.5 gives a stronger espresso with more body and intensity (ristretto).
• 1 to 2.5 to 1 to 3 makes the espresso softer and lighter in flavour (lungo).

Below is a handy overview of the most commonly used ratios:

The ratio is an excellent starting point, but not a fixed rule. Different espresso beans and roasts react differently. Taste, adjust and find your ideal balance.

How does the ratio affect the flavour of your espresso?

The ratio between coffee and water determines how much flavour and strength your espresso has. If you use too little water, the espresso becomes too bitter and heavy. If you use too much water, it tastes sour and watery.

A ratio of 1 to 2 usually provides a nice balance between bitter, sour and sweet. The espresso tastes full, has a creamy body and leaves a pleasant aftertaste. By playing with the ratio, you can fine-tune the flavour exactly to what you like:

• Stronger flavour: use slightly less water or grind a bit finer.
• Softer flavour: use slightly more water or grind a bit coarser.

The right ratio is therefore not just a matter of measuring, but also of tasting. Small adjustments often make a big difference.

Tips for measuring and adjusting the ratio

1. Use a digital scale.
   Weigh both the coffee in your portafilter and the espresso that comes out of the machine. This way you know exactly what the ratio is.
2. Note your settings.
   Write down how many grams of coffee you used, how much espresso you got and how long the extraction time was. This helps to repeat successful shots later.
3. Adjust one variable at a time.
   Don’t change everything at once. Start with the grind and test again. A small adjustment can already greatly affect the flavour.
4. Watch the extraction time.
   The ideal time for an espresso is usually between 25 and 30 seconds. If it’s faster, the grind is too coarse. If it takes longer, the grind is too fine.
5. Taste consciously.
   Always use the same coffee bean and pay attention to flavour changes. The more you taste, the better you understand what the right ratio is for you.

With this approach, you gain control over your espresso and learn to better find the balance between strength, aroma and sweetness.