If you don't have the traditional Greek pot to make coffee (a briki) you may certainly use an espresso maker or even an American coffee maker or even a saucepan. The trick is to start with very cold water. The real goal is to get a rich and frothier coffee. To make as authentic as possible without a briki, place coffee grounds in pot and add cold water to pot. One demitasse of water per serving. Bring to a boil and simmer for 5 minutes. Slowly pour coffee into demitasse cups to serve.