Contestants must be legal U.S. residents and, for the first three seasons, had to be 16 to 24 years of age. For the fourth season, the upper age limit was raised to 28 to attract more mature and diverse contestants.
Pressure: Espresso is made with pressurised hot water and is the basis for many coffee drinks, or can be served alone (often after an evening meal). It is one of the strongest forms of coffee regularly drunk and has a distinctive flavour and crema.