The stove top espresso pot is the most common espresso maker on the planet. Fine to medium grounds, water and a stove is all you need to make a stove top espresso.
To use: Fill lower chamber for the coffee pot with water up to the valve. Then place the filter basket in the lower chamber. Fill the basket with coffee grounds. Screw the top half on to the bottom half, and place on stove. Once the water comes to the top shut down off the stove, and server.