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.