Abstract: A process for producing milk foam includes pumping milk through a milk line with a milk pump having an adjustable speed for adjusting the capacity of the milk pump. Milk from the milk line and air are mixed inside a first mixing chamber to produce a milk foam. Properties of the milk foam, including a consistency of the milk foam, are a function of the speed of the milk pump. A device for producing the milk foam includes a milk container; an outlet; a milk line connected between the milk container and the outlet; a first mixing chamber installed in the milk line to mix milk and air to produce milk foam; and a milk pump having an adjustable speed coupled into the milk line.

Abstract: A method for producing a fresh, cold, coffee-based beverage using a predetermined amount of ground coffee, includes: feeding a predetermined amount of ground coffee into a brewing chamber; preparing a coffee concentrate with the supplied predetermined amount of ground coffee with a brewing operation in the brewing chamber, wherein the prepared coffee concentrate constitutes a specifiable multiple (VK) of a concentration (KN) for a normal drinking quality for filtered coffee at approximately 1.2 to 1.4% dry substance share; and mixing the prepared coffee concentrate with an amount of water which corresponds to a specifiable multiple (VM) of the amount of the prepared fresh coffee concentrate to prepare the fresh, cold, coffee-based beverage.

Abstract: A method for producing a fresh, cold, coffee-based beverage using a predetermined amount of ground coffee, includes: feeding a predetermined amount of ground coffee into a brewing chamber; preparing a coffee concentrate with the supplied predetermined amount of ground coffee with a brewing operation in the brewing chamber, wherein the prepared coffee concentrate constitutes a specifiable multiple (VK) of a concentration (KN) for a normal drinking quality for filtered coffee at approximately 1.2 to 1.4% dry substance share; and mixing the prepared coffee concentrate with an amount of water which corresponds to a specifiable multiple (VM) of the amount of the prepared fresh coffee concentrate to prepare the fresh, cold, coffee-based beverage.