Does the Bloom Matter in French Press? A Comprehensive Analysis

The French press is a popular brewing method known for its simplicity and rich, full-bodied coffee. However, the question of whether or not to bloom the coffee grounds before brewing in a French press has sparked debate among coffee enthusiasts. In this expert article, we will explore the question of whether bloom really matters in French press brewing, and explore different perspectives from coffee experts and the coffee community.

Understanding the Bloom

Bloom, also known as pre-infusion, refers to the initial step of adding a small amount of water to the coffee grounds and allowing them to release carbon dioxide. This process is believed to enhance the extraction and overall flavour of the coffee. The concept of blooming is commonly associated with pour-over brewing methods, but its relevance to French press brewing has been a point of contention.

Arguments Against Blooming in a French Press

One side of the argument is that blooming is unnecessary in French press brewing. Proponents of this viewpoint argue that since the coffee grounds are fully immersed in water throughout the brewing process, the carbon dioxide naturally escapes, eliminating the need for a separate blooming step. In addition, stirring the coffee during the brewing process ensures proper saturation of the grounds, resulting in a balanced extraction.

Arguments in Favour of French Press Blooming

On the other hand, some coffee enthusiasts advocate the use of blooming in French press brewing. They argue that blooming promotes better flavour extraction by allowing the grounds to degas and ensure even saturation. Blooming is believed to contribute to a more aromatic cup of coffee with increased clarity and complexity.

Expert Opinions

  • James Hoffmann – World Barista Champion and Coffee Expert
    James Hoffmann, a renowned figure in the coffee world, emphasises the importance of blooming in French press brewing. He believes that the bloom helps to release unwanted gases from the coffee grounds, resulting in a cleaner and more vibrant cup of coffee. According to Hoffmann, blooming can enhance the overall flavour and aroma, making it a worthwhile step in the brewing process.
  • Scott Rao – coffee consultant and author
    Scott Rao, a well-respected coffee consultant and author, has a different perspective on blooming in French press brewing. He argues that while blooming can have some impact on flavour extraction, it is not a critical step. Rao suggests that focusing on other variables such as grind size, water temperature and brew time may have a more significant impact on the final cup of coffee.
  • Matt Perger – World Brewers Cup Champion
    Matt Perger, a World Brewers Cup Champion, considers blooming to be an optional step in French press brewing. He acknowledges that it can contribute to a cleaner cup with less bitterness. However, Perger also points out that the immersion brewing method of the French press ensures sufficient extraction even without blooming. He suggests experimenting with both blooming and non-blooming techniques to determine personal preferences.
  • Barista Hustle – coffee education platform
    Barista Hustle, a popular coffee education platform, presents a balanced perspective on blooming in French press brewing. They acknowledge that while it can affect the flavour of the coffee, it may not be noticeable to everyone. Barista Hustle encourages coffee lovers to explore their palates and experiment with different brewing techniques to find what works best for them.
  • Specialty Coffee Association (SCA)
    The Specialty Coffee Association, a leading organisation in the coffee industry, does not provide specific guidelines for blooming in French press brewing. They recognise that blooming is commonly associated with pour-over methods, but do not explicitly endorse or discourage its use in French press brewing. The SCA emphasises the importance of consistent grind size, water quality and brewing time as key factors in achieving a delicious cup of coffee.

It is important to note that while these experts offer valuable insights, their opinions may vary based on personal experience and preference. Ultimately, the decision to use a French press should be based on individual taste and experimentation.

Experimentation and Personalisation

Brewing coffee is an art form, and individual preferences play a significant role in determining the ideal brewing method. As a French press user, you have the freedom to experiment and personalise your brewing process. You can try brewing with or without the bloom and see if it makes a noticeable difference to the taste and aroma of your coffee.

The Bottom line

In the realm of French press brewing, the question of whether the bloom really matters remains open. While some argue that it enhances flavour extraction, others believe that it is unnecessary due to the immersion brewing method. Ultimately, the decision to bloom or not to bloom in a French press comes down to personal preference and experimentation.

The beauty of coffee brewing is its versatility and the opportunity to explore different techniques. Whether you decide to use a French press or not, the most important thing is to enjoy the process and enjoy the cup of coffee that best suits your taste buds.


Does the bloom matter in French Press?

The bloom itself does not effect taste, and it is an important part of using a french press, as its key to providing even extraction. You are really contradicting yourself here. If the Bloom is necessary for an even extraction, it does definitely affect taste.

Is Blooming necessary for French press?

The first bloom is an essential step. When water first touches the grounds, it starts a chemical reaction where carbon dioxide and other gases are released from the beans. It sets the beans up to be ready for brewing when you add the rest of the hot water into the carafe.

Does blooming coffee make a difference?

Bloom is a quick bubbling up of carbon dioxide and coffee grounds that occurs when freshly roasted coffee is brewed. Giving your coffee a half minute to bloom, depending on how recently it was roasted, will enhance its flavors. Coffee gives off carbon dioxide for about two weeks after it is roasted.

What happens if you don’t let coffee bloom?

If you don’t see the bloom when you make your coffee it most likely means that the degassing has already occurred and with that the flavor compounds within the beans have deteriorated preemptively. The flavors therefore won’t be as prominent in the beverage you’re about to drink… which is unfortunate.

How long do I let coffee bloom in a French press?

Your water should be around 200°F, not boiling; this will allow the most extraction without scorching your ground coffee. You want to pour enough water that you cover the ground coffee in about an inch of water. Make sure that all of your ground coffee is evenly saturated, and allow your coffee to bloom for 30 seconds.

Does blooming coffee do anything?

We bloom coffee to give the grounds time to make space for water. Additionally, carbon dioxide tastes sour, so blooming prevents CO2 from infusing into your coffee.