Depending on the beverage: Espresso (50 ml) in less than half a minute, Caffè Lungo (110 ml) and Caffè Americano in less than one minute, Cappuccino, Latte Macchiato and Mocha which require the use of two successive capsules will take a little longer than a minute.
Why is the top of my coffee covered with a foam layer?
The foam layer covering the espresso and lungo beverages is called "créma" and is the result of thorough extraction of the coffee contained in the capsule by hot water delivered at elevated pressure. Créma is a widely recognized sign of high quality coffee. Consumers can easily test the cream strength by smoothly depositing granular sugar on the créma layer. If créma is good, sugar will take several seconds before sinking under the créma layer.