It’s not that cone filters won’t make a great cup of coffee — the OXO On 9-Cup still ranked fifth out of 10 in our taste test. But flat bottoms generally allow for the grounds to be more evenly extracted and increase the coffee’s flavor. (It’s no coincidence our other three recommendations have flat-bottom brew baskets). You may have to do a little more tweaking to get this coffee maker’s brew to the best it can be, and that’s the other reason we like the 12-cupper more. This smaller version doesn’t let you tinker with water temperature.
*SCAA Certified: A Specialty Coffee Association of America certification indicates the machine can heat water to a temperature between 195 and 205 degrees Fahrenheit and ensures that hot water will be in contact with coffee grounds for no less than four and no greater than eight minutes. It’s a solid confirmation of quality. But according to Joseph Rivera, a research coffee scientist at coffeechemistry.com, not every manufacturer chooses to submit their coffee makers for SCAA certification, and there are definitely great drip coffee makers out there without its stamp of approval. Six of the 10 coffee makers we tested are SCAA-certified — including all four of our top picks.
The principle of a vacuum brewer was to heat water in a lower vessel until expansion forced the contents through a narrow tube into an upper vessel containing ground coffee. When the lower vessel was empty and sufficient brewing time had elapsed, the heat was removed and the resulting vacuum would draw the brewed coffee back through a strainer into the lower chamber, from which it could be decanted. The Bauhaus interpretation of this device can be seen in Gerhard Marcks' Sintrax coffee maker of 1925.
A good grinder: An even grind is essential for drinkable espresso. In fact, if you’re trying to save money, most experts recommend cheaping out on your espresso machine rather than your grinder. Since we wanted to make sure our machines had the best chance of making great espresso, we started with a $600 grinder recommended to us by Seattle Coffee Gear.
Before we get into the technical aspects of the two types of espresso machines, here’s what you really need to know. Semi-automatic espresso machines are going to be perfect for the espresso connoisseur. If you’re the type that really wants to get the best-quality and taste out of your espresso machine and don’t mind taking a little more time and effort out of your schedule, the semi-automatic espresso maker is going to be for you. It’s a little bit more work, but the key here is that you ultimately have more control over every subtle nuance that goes into your version of the perfect shot of espresso with a semi-automatic.
“I grind the beans in a Hario hand grinder gifted from my brother to me when he upgraded to a fancy electric one. Using the hand grinder is meditative. It feels like you’re ‘earning’ your morning coffee a little bit more. At home, I use a Muji porcelain pour-over, but when I’m at my family’s house in metro Detroit, I love using their Bonavita BV1800SS. Unfortunately, I don’t have one of my own, but seriously, you can’t fuck it up. Super-easy and delicious every single time.” — Kimberly Chou, co-director of Food Book Fair
While clever baristas are always coming up with twists on common coffee staples, the most popular beverages are based on a shot or more of espresso and steamed milk with a layer of foam artistically placed on top. Cappuccino is among the most popular espresso-based drinks, but with some clever applications of milk and cream, they sky is the limit as to what you can create.
What Amazon users have to say: Reviewers love that you can customize the amount of froth in your drink. They also love the simplicity of use: just add water, add milk to the frother container, add coffee, and you’re ready to go. A major plus for the aficionados: this machine still gives you the option to use your own coffee grounds instead of pods, allowing for fresh and customizable brews. Several users noted how the quality of the espresso is “amazing for the price” of the machine.
Where MistoBox really shines is in its efficiently designed website and deep customization. If you want to, you can sign up for a scheduled delivery of curated espresso blends or single origin coffees and just let it ride—no input is necessary beyond the initial question of what kind of roast you like. But if you want to get a little more involved, you can rate each coffee you receive to refine future shipments or—if you want to take the future into your own hands—curate your own list of upcoming beans with a feature MistoBox calls the "Brew Queue." The number of choices is dizzying, and there are plenty of user reviews to guide your way thanks to a very active community.
In the semi-automatic machine, water pressure and temperature must be stable and consistent, and according to our expert, the pressure shouldn't be too high. Typically, coffee is brewed at a pressure of about 10 bars, and an ideal water temperature is around 195 degrees. Generally, the more expensive the machine, the better the equipment inside that regulates these two factors. High-quality machines tend to have a mechanism called a PID, or proportional-integral-derivative, controller. The PID's function is to maintain constant water temperature with extreme accuracy, down to the degree. Two central problems plaguing inexpensive espresso machines is that they lack a PID, meaning the temperature of the brewing water can fluctuate up and down and yield inconsistent results. Inexpensive machines often advertise that they have 15 or 20 bars of pressure as a selling point. But, higher pressure is not the priority, and too much pressure can actually lead to over-extraction and bitterness in your espresso shot. Therefore, we looked for a machine with good temperature and pressure control.