Crowded coffee machines are the cheapest. The brewing process is reduced to pouring ground coffee into a special filter (usually disposable) and pouring boiling water. As a result, we get a drink that tastes like the so-called “spills,” or ground coffee brewed directly in a glass or cup — but you don’t have to worry about coffee grounds because they remain on the filter.
Overfilled coffee machines are simple devices, but they have significant advantages. The most important is the presence of a hot plate, which keeps the coffee warm even several tens of minutes after brewing. Not without significance is the fact that you can make a large amount of drink at a time, which makes the overflow coffee machine the ideal product in a situation where you need to brew coffee for a large group of coffee lovers in a short time.
However, it should be remembered that coffee from an overflow coffee machine rarely tastes the same as coffee from a coffee machine under pressure (it is usually more acidic and more saturated in taste), and also contains much more caffeine. Brewing in it is also not very effective if you plan to make a small cup of coffee for just one person.