A grinder might be a complicated machine to properly take advantage of, but the payoff tends to be very big. A grinder allows you to customize the flavor of your coffee by experimenting with grind sizes, meaning that you can make coffee catered to your taste.
The boiler still is one of the most, if not the most important parts of an espresso machine. Modern boilers have a heating element that works by rapidly heating up the boiler so that the water reaches the desired temperature. Right off the bat, many people notice that there are obvious advantages to having two boilers instead of one.
Baristas are, in reality, water magicians. After all, coffee is more than 90% water and it has an enormous influence on the taste of your coffee. Which is why we’ve decided to dedicate an entire article on finding the right water for your espresso machine.