Coffee machine

1. Method of operating a coffee machine comprising a grinding device, a brewing device, a brewing water source and a flowmeter, arranged before the brewing device, comprising the following:

Acquiring flowrate data of a flow rate on the flowmeter;

Converting the flowrate data obtained from the flowmeter into display data representative for a grind grade;

Displaying the display data on a display device in a form identifiable by the user; and

Providing a manually actuatable device to receive an input of a desired setting of the grind grade of the grinding device;

selecting a first one of a plurality of settings on the manually actuatable device.

2. Method of operating a coffee machine comprising a grinding device, a brewing device, a brewing water source, a flowmeter arranged before the brewing device, a manually actuatable device having a plurality of grinding settings, with each of the plurality of grinding settings corresponding to a unique grind grade of the grinding device, and a controller in communication with each of the grinding device, the brewing device, the brewing water source, the flowmeter, and the manually actuatable device, the method comprising:

Receiving a first start input by the controller, the first start input being provided by a user to begin a first coffee preparation operation;

Receiving a first grinding input by the controller from a first one of the plurality of grinding settings, wherein the first one of the plurality of grinding settings corresponds to a first grind grade, and wherein the first grinding input is provided by the user;

Acquiring flowrate data by the controller of a flow rate on the flowmeter;

Converting the flowrate data obtained from the flowmeter by the controller into display data representative for a grind grade;

Displaying the display data on a display device in a form identifiable by the user;

Receiving a first stop input by the controller that cancels the first coffee preparation operation, the first stop input provided by one of the controller or the user, wherein the user provides the first stop input based on the display data displayed on the display device or the controller provides the first stop input based on the flowrate data; and

Receiving a second grinding input by the controller from a second one of the plurality of grinding settings, the second one of the plurality of grinding settings corresponding to a second grind grade that is different than the first grind grade, wherein the second grinding input is provided by the user.

3. Method of operating the coffee machine of claim 2 , further comprising:

Receiving a second start input by the controller, the second start input being provided by a user to begin a second coffee preparation operation.