Coffee Machines Capsules Capsules of coffee machines are simple to use and do not require a filter or grind of coffee beans. They are also compact and take less space in your kitchen. A capsule is a plastic or aluminum package that is filled with pre-measured quantities of coffee grounds. https://wwwcoffeeeuk83428.total-blog.com/the-biggest-issue-with-best-pod-coffee-machine-and-how-you-can-resolve-it-53556131