Espresso uses high acidity coffee beans, okay? the main factors affecting the brewing of espresso

The coffee beans used to make espresso coffee are usually of the Coffea arabica var. arabica), but robusta coffee beans (Coffea arabica var.robusta) are also used in some espresso blends.

Although Robusta coffee beans are generally considered to be of lower quality than Arabica coffee beans, Robusta coffee beans are known to be higher in coffee oil and higher in caffeine. Because they are roasted too deeply, the quality difference between Arabica beans and Robusta beans becomes less pronounced.

Espresso beans are usually roasted very deeply, although some people do prefer a lighter roast-it's a matter of personal taste, and any roast can be used in espresso making equipment.

Factors for Perfect Espresso

The main factors that affect your perfect espresso brew include: how much pressure your espresso machine generates; how hot the brew temperature is; and how you grind your coffee (you use a coffee grinder with burrs instead of blades, and how finely you grind your coffee). The best time to brew espresso depends on these factors. You need to be familiar with Espresso's 3 layers- Crema, Body and Heart.

Equally important are the initial quality of the coffee, the freshness of the coffee, whether it was stored correctly and whether the roaster has done a good job of roasting your espresso.

Make sure coffee is recently roasted and shipped in valve-sealed bags. Grinding should be done immediately before brewing. Don't forget to preheat the demitasse and portafilter. All of these details are important for making quality espresso.

One thing to watch out for is the acidity of the coffee-low-acid coffee produces a fairly bland taste, while high-acid espresso beans glow better.