Having perfected the espresso brewing process, the E4 espresso machine optimizes extraction time with its signature Pulse Extraction Process. After grinding the coffee beans for utmost freshness, the coffee maker delivers hot water through the grounds at short intervals and at multiple levels, a three-dimensional process that allows the coffee flavors to develop fully. Programmable for coffee strength, the white espresso machine with chrome-plated accents includes four preprogrammed coffee specialties: espresso, espresso doppio, coffee and coffee doppio.