The Convenience of Pod Coffee Machines Pod coffee machines make use of preportioned beans, which are then sealed in capsules made of aluminum or plastic. They are convenient, but they are more expensive in the long run than bean-to cup machines, and they have a negative impact on the environment. https://coffeee-uk20974.blog5star.com/28690474/the-most-hilarious-complaints-we-ve-heard-about-capsule-coffee-machine