Difference Between Pressurised and Non-Pressurised Filter Baskets
With every espresso machine, the portafilter will normally come with a non-pressurised or pressurised basket (or both!)
Each type of basket has a big impact on your espresso shot so I’m going to explain the differences between them and which one you should use when making coffee.
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How to tell which is which?
You should be able to identify both types of filter baskets just by looking at them as they have distinct characteristics.
Pressurised filter baskets will have only a single small hole in the bottom which the coffee will flow through, whereas a non-pressurised basket has lots of tiny holes.
But why is this important and how does it affect your coffee?
What Is The Difference Between Pressurised and Non-Pressurised Filter Baskets?
When using a pressurised basket, the single hole creates a build up of pressure below the coffee which forces the espresso through.
With a non-pressurised basket, there are multiple holes so the pressure is dependant on your grind size and tamp pressure.
By using a non-pressurised basket, you will extract more from the coffee rather than relying on the pressure build up from the single hole on the bottom of your basket. This gives you a more impressive crema and better tasting espresso.
That being said, there are different benefits to using both types of filter baskets:
Disadvantages of Pressurised:
Doesn’t rely on coffee for resistance
Poorer espresso quality
Weaker crema
Limited control of extraction
Benefits of Pressurised:
Less dependant on grind size (so you can have a coarser grind)
No expensive grinder required
Added convenience for beginners
Don’t have to spend time dialling in your grind
More leniency with tamp pressure
Most baskets are compatible with ESE pods
Disadvantages of Non-Pressurised:
Requires an expensive grinder
Learning the right technique is time consuming
Not as convenient as pressurised
Easier to over/under extract your coffee
Benefits of Non-Pressurised:
Greater extraction control
Better espresso quality (full-bodied)
Thicker crema
Great for learning proper technique
Which one should you use?
If you want a quick, relatively hassle free espresso shot and aren’t too fussed about having control over your extraction then a pressurised filter basket is ideal.
You can make a decent shot, however it will never be as full-bodied and tasty as one pulled through a non-pressurised basket.
This option gives you greater control over your extraction for a better tasting espresso although it can be time consuming when tweaking your technique to get the perfect extraction.
Summary
Whether you have a pressurised or non-pressurised basket, you will be able to make good tasting coffee. Pressurised baskets are great for beginners but if you really want to take your espresso making to the next level then a non-pressurised basket is the way to go. You will get a full bodied espresso shot with greater flavour and depth, similar to what you would expect from your local coffee shop.