The drip coffee machines are usually electric ones that heat the water and then pump it over the grounds. However, a stove top type is still used. The water is boiled in a tea kettle and poured into a top reservoir with holes in it. A smaller container below holds the coffee grounds, usually with a filter. When the water finishes dripping through to the bottom, the coffee is ready to drink. Both the electric and stove top makers come in many brands and in a wide range of prices. The less expensive ones require a filter, while others may come with a permanent gold-coated coffee filter or other permanent filter.
There are different types of espresso machines that are available today. While venturing towards purchasing an espresso machine of choice the important thing is to decide upon is the extent of control that one wishes to exert over the coffee brewing process. Often the extent of control over the brewing process that is offered involving superior functionalities becomes directly proportional to the difficulty in operating i.e. increase in operational complexity. The differences in the various espresso machines of the day ought to be understood in order to make a worthy purchasing choice.
If you work in a small office, a machine with a small carafe is sufficient. However, you work in a very large office, a machine that can fill a large coffee urn might be what is needed. Another feature that would be useful in this type of environment is a machine with a "time to clean" indicator coupled with a self clean feature. Often, calcium buildup can occur in these machines and an indicator of when the machine needs to be cleaned is important. In a shared environment, it is very likely that responsibilities like cleaning the coffee machine can be ignored due to the phenomenon known as the tragedy of the commons. By having a machine with simplified cleaning measures like an auto-clean, you can avoid the pitfall of nobody taking responsibility to clean.
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