Currently, single cup coffee maker is the most well-known way of preparing coffee at house. Their reputation is due to its convenience of use and the low servicing that this maker needs.
However, this system has one significant disadvantage -it is a shut program. Closed program indicates when customers bought only one cup maker, they can only use the coffee that comes with this system.
For example, if you would to buy a Senseo coffee maker, you would be permitted to use Douwe Egberts coffee and if you are using a Nespresso, you would be using coffee of the same item.