The pad holder brings the Senseo with special PADS to cook a very strong coffee. Due to the tight screen in Padholder only a small amount of water is pressed (about half of a normal Senseo coffee cup) by the PAD.
The resulting Presso is not really a strong espresso, but tastes not bad and is an alternative for those who like to drink an espresso, at home, however, have only a Senseo and an expensive coffee machine from Saeco / Jura etc..