I Swear by This Coffee Maker—Even With Its Quirks
After years of use, the Ratio Six coffee maker still produces incredible drip coffee. Here’s why we highly recommend it.


I wouldn’t say my life’s predictable, but my day always starts with a cup of coffee.
About five years ago, I went through a spate of food allergy testing—and one of them required cutting out dairy. I started drinking my morning coffee black, which made me super picky about coffee quality and kicked off my journey through Bean Land. Now, I own too many brewers and can tell you that the Ratio Six makes the best drip coffee I’ve ever had.
There are so many qualities that make the Ratio a standout. For starters, the flat-bottomed basket and wide showerhead result in evenly saturated, full-flavored coffee. It consistently makes a full pot in about five minutes (which is in line with the Speciality Coffee Association’s brewer certifications) and works at consistently high temperatures, which extracts more from coffee.
Because my husband and I both work remotely, we like to replenish our coffee mugs throughout the morning. The Ratio Six’s insulated carafe keeps coffee hot—as in, it’s still a piping 168°F after an hour. The machine is easy to use, too, since it has just a single control button.
However, while I’d like to say that the Ratio Six is all sunshine, rainbows, and caffeine, it does have its issues. Namely, it can be kind of annoying to use. The water reservoir’s opening is a small-ish hole, which leads to splashes. The Ratio Six also has a lot of parts. There’s the carafe, the carafe’s lid, the brew basket, a plate, and the piece that creates a seal over the showerhead. After brewing, you have to remove the basket, place it onto the plate, and add the lid to the carafe. This makes it tedious to use and clean, and I’ve always found it annoying. That said, I love the Ratio Six despite its flaws—and because the coffee it makes is unbeatable. If you’re a coffee person, I think you’ll find it worth investing in, too.
Why We’re the Experts
- Riddley Gemperlein-Schirm is the associate editorial director of Serious Eats.
- She’s been with the site since 2021 and has been testing gear professionally for more than six years.
- She really, truly loves coffee and helped to test espresso machines.