If you've never put too much thought into how to clean a Keurig or any other single-use pod coffee maker, we don't blame you. After all, they're popular because they're seemingly mess-free.

How do you make espresso coffee without using pumps, presses and other complicated devices? Appliance Science looks at the AeroPress, a simple coffeemaker that uses physics to make better coffee.

We rate every coffee machine we test for how easy it is to clean. Read on for top tips to keep your coffee machine working smoothly. To find coffee machines that are easy to clean, head to the best ...