Systems, devices, and methods are provided for conducting a social interaction. A first user account may be associated with a first beverage container. A second beverage container may be detected as being proximate to the first beverage container. A second user account associated with the second beverage container may be accessed to identify a commonality between the first and second user accounts. The commonality may be objective and/or subjective information or data about the users of the first and second beverage containers. Information indicative of the commonality may be displayed on an electronic display of at least one of the beverage containers. The electronic display may be flexible such that it conforms to a curvature of the beverage container.

Various beverage preparation systems and methods are disclosed. The beverage preparation system can include a dispensing unit configured to receive beverage, such as a shot of espresso, from a beverage preparation machine. The dispensing unit can include a dispensing unit with a first end and a second end. The dispensing unit can be rotatable between an upright position and an inverted position. The dispensing unit can be configured to receive the beverage through the second end when the dispensing unit is in the upright position, and can be configured to receive cleansing fluid through the second end when the dispensing unit is in the inverted position. In some embodiments, when the dispensing unit is in an intermediate position between the upright and inverted positions, the dispensing unit is configured to dispense the beverage out of the first end and into a cup or other vessel.

Various beverage preparation systems and methods are disclosed. The beverage preparation system can include a dispensing unit configured to receive beverage, such as a shot of espresso, from a beverage preparation machine. The dispensing unit can include a dispensing unit with a first end and a second end. The dispensing unit can be rotatable between an upright position and an inverted position. The dispensing unit can be configured to receive the beverage through the second end when the dispensing unit is in the upright position, and can be configured to receive cleansing fluid through the second end when the dispensing unit is in the inverted position. In some embodiments, when the dispensing unit is in an intermediate position between the upright and inverted positions, the dispensing unit is configured to dispense the beverage out of the first end and into a cup or other vessel.

A liquid discharge control method includes acquiring a cup height of a cup in response to detecting that a cup is placed in a preset position, controlling a liquid outlet to open for liquid discharge in response to receiving a liquid discharge instruction; acquiring a real-time liquid level height in the cup during the liquid discharge, and controlling the liquid outlet to open or close based on the cup height and the real-time liquid level height.