Pump or Steam?
This entry was posted on January 10, 2009.
In the world of espresso machines, there are two different directions to take: Pump or steam. A lot of the machines we carry are pump driven and that's pretty much the preferred method for quality espresso extraction, but we do carry a model that utilizes steam pressure and so we wanted to talk about why.
More than anything, our goal is to provide a wide selection of espresso and coffee related gear in a fairly vendor- and goal-agnostic environment. Whether you're looking to artisan craft excellent espresso each morning or are simply interested in replacing your Starbucks habit, we want to be able to help you find the best tools to achieve your goal. We don't judge, baby -- we're not snobs.
To that end, we added a DeLonghi coffee-and-espresso combination machine, which is a great solution for folks who battle it out for one type of java over the other in the morning. What may lack in ultimate taste is more than made up for in the convenience of a single unit.
Because these machines combine coffee and espresso makers, DeLonghi used steam pressure because of size and cost limitations. Utilizing one technology for both brewing coffee and pulling espresso makes for a sleeker design and a lower cost overall. But steam doesn't get the same amount of pressure as a pump-driven machine and the steam pressure temp of 230-240F is well above the recommended espresso extraction temp of around 204F. The result? Burnt espresso.
Steam pressure is older technology and more affordable overall, so you will likely find it in some of the lower end espresso machines on the market. Just be aware of what you're getting into -- if price means more than flavor, steam pressure espresso machines may be the match for you.