What are the methods of filtering coffee grounds?

There are many ways to do this: Drip Filter - The typical Americano coffee maker utilizes a drip filter, where the coffee grounds are brewed and then filtered out through a built-in funnel and filter paper. Or using a typical espresso machine, using a mixture of high-pressure steam (which can reach 9 atmospheres) and water to quickly pass through the coffee layer and extract the coffee from the ground and compacted coffee powder within seconds, a cup of Italian aromatic espresso Espresso is born!