Why Use a Convex Tamper vs. a Flat Tamper, and Which is Better?

Why Use a Convex Tamper vs. a Flat Tamper, and Which is Better?

A coffee tamper is a vital tool that baristas rely on to brew espresso. With its sturdy handle and solid construction, a tamper is essential for compressing coffee grounds into the portafilter basket, setting the stage for optimal extraction.

And while most rely on standard flat tampers, some baristas prefer to work their magic using convex ones.

To the uninitiated, it’s hard to pick out a clear winner in the flat vs. convex tamper debate.

So let’s settle things once and for all.

Why use a convex tamper?

Convex tampers (so-called because of their convex shape) reduce water channeling and promote an even extraction by creating a tight seal between the coffee grounds and the portafilter basket. However, the overall benefits of convex tampers are overshadowed by the consistent results of flat tampers, making them the preferred choice among baristas.

What Is the Difference Between a Convex and a Flat Tamper?

Flat tampers have a (you guessed it) flat base allowing coffee brewers to apply an even amount of pressure across the surface of the coffee puck. Convex tampers, on the other hand, feature a slight curve, resulting in a coffee puck that is marginally thinner at the center.

Coffee connoisseurs favor flat tampers because they offer more predictability and consistency. Additionally, these tampers produce a consistently even bed of coffee grounds.

A uniform density throughout the basket ensures a balanced extraction, allowing water to pass through the beans at the same rate. The result is an espresso shot featuring a rich blend of flavors.

Convex tampers, by contrast, create a slight indentation in the center of the coffee puck, which can result in an uneven extraction. In addition, some baristas believe this shape prevents water from channeling down from the sides.

In practice, the end result from both tampers isn’t too big. It’s just that a flat tamper ensures greater consistency and minimizes the risk of uneven extraction.

What Tamper Should I Use?

Flat tampers are more commonly used than their convex-shaped counterparts. Their ability to provide an even pressure distribution makes them the best tampers for beginners.

For those seeking a more traditional and tactile experience, consider a flat tamper with a sturdy wooden handle. The combination of a flat base and a wooden handle provides excellent tamping performance and adds a touch of elegance to your espresso routine.

Can You Tamp Without a Tamper?

Tamping without a tamper is possible but not recommended. It could lead to poor extraction and make for an unsavory cup of coffee. To tamp without a tamper, apply pressure to coffee grounds using the back of your hand or a spoon.

Tamping using a hand or spoon results in a non-uniform pack which, in turn, creates empty channels and paths of least resistance for water when passing through the coffee grounds. The consequent under-extraction and over-extraction make for low quality espresso shot.

To the untrained eye, a tamper might be considered insignificant. However, using this tool has numerous benefits, some of which include:

  • Optimal Extraction: A coffee tamper helps create a tightly packed, uniform coffee bed in the portafilter basket. Doing so encourages a consistent flow of water through the grounds, resulting in a well-balanced extraction of flavors, oils, and aromatic compounds from the coffee.
  • Better Crema: A good tamping technique plays an essential role in producing a luscious layer of crema on the espresso shot. By ensuring an even density of the coffee grounds, you can achieve the desired crema and add visual allure to the espresso experience.
  • Comfort and Efficiency: A well-crafted tamper, with its ergonomic design and comfortable grip, enhances the tamping process, making it more efficient and enjoyable for baristas.

Conclusion – Convex or Flat Tampers?

Based on our discussion, it’s safe to conclude that flat tampers are better for new and seasoned baristas.

Now that you're ready to elevate your coffee game, all that’s left is to purchase a high-quality flat tamper. To save you time, here’s what makes a great tamper:

  1.       Stainless steel build
  2.       Food-safe materials that don’t wear off and cause health concerns
  3.       Is stylish but ergonomic at the same time (i.e., has a comfortable grip)

All of these features are present within Luxhaus’ Espresso tampers.

For the purists, consider the LuxHaus Espresso Coffee Tamper, a manually operated option that gives you control over the tamping pressure.

For those interested in a foolproof solution, the LuxHaus Calibrated Pressure Tamper removes the guesswork from tamping by applying consistent pressure each time.

We’re confident these two tampers will help you brew amazing tasting espresso each time. So confident, in fact, that we’re putting a lifetime warranty on it—if you’re not happy, just return the items and get refunded ASAP!

Ready to brew killer coffee at home? Visit the LuxHaus product page to get started!


Go through some of the most commonly asked tamping questions to tamp coffee the right way!

What Happens if You Tamp Espresso Too Hard?

Tamping too hard prevents water from evenly flowing through the puck. This results in a bitter taste due to over-extraction at the edges and under-extraction in the center of the coffee bed. A calibrated coffee tamper helps resolve this issue.

Should You Twist a Tamper?

It may look fancy, but you shouldn’t twist a tamper. Rotating after pressing down disrupts the evenness of the coffee bed and prevents proper extraction of the coffee beans. To achieve a uniform tamp, apply downward pressure without twisting motion and enjoy a well-balanced and flavorful espresso!

What Is the Best Weight for a Tamper?

The ideal weight for a tamper is subjective and varies based on personal preference. Generally, baristas prefer tampers weighing between 1 to 2 pounds (450g to 900g). Opting for a comfortable weight provides enhanced control and stability when applying the necessary pressure to the coffee grounds, which is essential for achieving optimal results.

How Do I Tamp More Evenly?

To achieve a more even coffee tamp, ensure an even distribution of grounds within the portafilter. Hold the tamper parallel to the counter and apply consistent pressure. Then, check for a smooth, level surface after tamping. Practice is vital for improving your tamping technique and achieving more consistent results.


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