While both Nespresso and Keurig specialize in single-serve coffee, they go about it in different ways. Original Nespresso machines use pump pressure to force the water through the grinds. Nespresso's Vertuo line uses Centrifusion technology to spin the capsule at high speed to force the water through the grounds and out of the sides of the capsule. Keurig uses a basic pour-over method to push the water through the grounds to drip out of the bottom.