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.
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.
NESCAFÉ® Dolce Gusto™ provides a range of cups in order to facilitate beverage preparation. The machine has an adjustable cup support to fit almost any cup or glass.