Patent ID: 8397627

Claim:
A brewing device for creating coffee beverages comprising: a brewing unit; a crema valve; and an outlet; the brewing unit comprising a brewing chamber being configured to brew coffee with water under a brewing pressure; the crema valve comprising: a crema chamber; an inlet opening connecting the crema chamber with the brewing chamber; a closing plug for closing and opening the inlet opening being configured to enable an amount of brewed coffee to flow from the brewing chamber through the inlet opening into the crema chamber if the brewing pressure exceeds a predefined value; wherein the crema valve is designed in such a manner that the amount of brewed coffee is directed through the crema chamber to the outlet and is enabled to be swirled through in the crema chamber so that crema is created, wherein the brewing device comprises: an injection device for injecting a gas into the crema chamber and a dosing device for the dosing of the quantity of the gas injected into the crema chamber, the injection device comprising: a nozzle terminating in the crema chamber and a pump being arranged outside of the crema chamber for injecting the gas through the nozzle into the crema chamber and being configured to pressurize the gas so that the gas is enabled to be injected into the crema chamber when the amount of brewed coffee is directed through the crema chamber to the outlet, the dosing device being designed in such a manner that upon every injection of the gas a preset quantity of the gas is injected in each case wherein the preset quantity of the gas is a parameter that can be changed.