Making espresso is both an art and a science. Perfectly dialing in your coffee bean’s grind size is no small feat and remains one of the most important aspects of pulling espresso properly.

It is important to understand how coffee grind size effects:

• Extraction
• Pressure
• Taste

You are able to use Gevi 3-in-1 espresso machine  to make perfect espresso at home. It will take time to master the fundamentals of pulling espresso. While the Gevi 3-in-1 espresso machine makes this as easy as possible, as with any espresso machine, it takes a lot of practice to be able to pull the perfect shot.

First, we’ll look at the grinder of the Gevi 3-in-1 espresso machine and what options and ease of use that it affords you. Then, we’ll take a look at how you can best use those options to dial in your coffee grind size to exact the perfect coarseness level.

Gevi 3-in-1 Smart Espresso Machine Bulit in Grinder Features

【DOSE CONTROL GRINDING】 Integrated precision conical burr grinder grinds with 30 grind settings to meet different demands to deliver the right amount of freshly ground coffee directly into the portafilter for your preferred taste with any roast of bean.

【MAKER WITH BUILT-IN COFFEE GRINDER】: Innovative grinding cradle allows any at home barista to grind directly into the espresso portafilter for the perfect espresso.

【Conical Burr Grinder 】 The integrated grinder offers an all-inone grinding experience. The hardened Stainless Steel Conical Burr achieves consistent grind particle sizes, which minimizes heat transfer & reduces friction thanks to its gentle & slow rotation.

 【Personalized Dose Control】 Single-shot Grind Mode: Customisable & Auto-shut. -Double-shot Grind Mode: Customisable & Auto-shut. -Manual-shot Grind Mode: Free to control.

How Grind Size Affects Espresso Shots

Other than the coffee itself, consistent pressure, and water temperature, grind size is the most element. In fact, it is the most important element that you can and should vary as you gain more skill. Espresso machine should create about 9 bars of pressure at the puck and the water temperature should be around 193 °F to 200 °F. But grind size can change quite a bit.

Grind Size and Extraction

The grind size of coffee beans affects how fast or slow water passes through the espresso machine's portafilter. If the grind size is too fine, the water will pass through the coffee too slowly, resulting in an over-extracted and bitter espresso shot. On the other hand, if the grind size is too coarse, the water will pass through the coffee too quickly, resulting in an under-extracted and weak espresso shot.

Firstly, espresso should be ground finely. It is ground the second most finely of brewing methods after Turkish coffee. So, we are working with very finely ground coffee with espresso. This is for two reasons.

• Fine coffee grounds create the best puck in the portafilter tamping process

• Fine coffee grounds create the desired level of surface area of extraction

Grind Size and Your Coffee Puck

After you grind your coffee into your portafilter you must tamp it down. Tamping is the process where you compact the coffee grounds together into a puck. This coffee puck needs to be both tight and very even.

Conclusion

The  Gevi 3-in-1 Smart Espresso Machine is the ideal at home espresso machine. It has grinder, steamer, and the main espresso pulling apparatus all in one unit to make espresso making as easy as possible. Specifically, the Gevi 3-in-1 Smart Espresso Machine ensures that you are able to grind your coffee perfectly—always having total control over your coffee.

Remember to clean and properly maintain the grinder for best results over time.