The dynamic adjustment of ratios of beverages to be mixed and dispensed in creating mixed or blended beverages is provided. A selection of beverages may be received from a user interface menu displayed by a computing device. A representation of a mixed beverage comprising the beverage selections may then be displayed according to pre-assigned default ratios. An input may then be received to adjust an assigned ratio associated with one or more of the beverage selections. The computing device may then adjust an assigned ratio associated with the one or more beverage selections in response to receiving the input. The computing device may then automatically adjust assigned ratios associated with other beverage selections in the representation of the mixed beverage. The computing device may then display a representation of the mixed beverage with the adjusted ratios in the user interface.