Beverage discharge disposition adapted for frothing a liquid food product, in particular milk, comprising a discharge casing provided in the front region of a beverage preparation machine , and that provides discharge of at least two types of beverages into a recipient underneath thereof, whereby said discharge casing presents: - an attached part associated to the casing of said beverage preparation machine and that presents selection means of beverage type, including a milk option, and a first beverage discharge for discharge of a first beverage type, such as for example coffee; characterized in that said discharge casing further presents: - a second part that is removable from the discharge casing and corresponds to a milk circulation disposition providing removable flow connection to an exterior supply recipient to said machine , presenting milk flux selection means and comprising all components exposed to the milk circulation in said machine including a second beverage discharge , whereby said milk circulation disposition is provided so that can be manually attached in removable manner on said attached part of discharge casing , so that said second beverage discharge results next to said first beverage discharge inside of said discharge casing , whereby said milk circulation disposition presents a first structural part adapted so as to provide support to said milk flux selection means and to said milk entry connection , and further presents a second structural part adapted so as to provide support to a vapour entry connection , whereby said first and second structural parts are configured as elements that can be manually pressure-fitted with each other, and whereby said first and second structural parts are adapted so that support one air valve disposition , one flow distribution disposition and one milk discharge , along a general upstream to downstream direction, whereby said milk circulation disposition comprises one flow distribution disposition adapted so that presents said milk entry connection and said vapour entry connection , and that provides flow connection, by means of pressure fitting, with said air valve disposition , and with said second beverage discharge , whereby said flow distribution disposition is retained in exterior walls of said first and second structural parts , whereby said milk flux selection means are adapted so that provide a regulation of air flow, by means of said air valve disposition , inside of said milk circulation disposition , and thereby of the type of milk flow discharged through said second beverage discharge , whereby said air valve disposition comprises a regulation disc of air flux, provided in a food grade metallic league, and whereby said milk flux selection means and said beverage type selection means are provided in different regions and planes of said discharge casing , and whereby said milk flux selection means are provided in a lateral region of said removable part of discharge casing , and said beverage type selection means are provided on a frontal region of said attached part of discharge casing . - an attached part associated to the casing of said beverage preparation machine and that presents selection means of beverage type, including a milk option, and a first beverage discharge for discharge of a first beverage type, such as for example coffee; characterized in that said discharge casing further presents: - a second part that is removable from the discharge casing and corresponds to a milk circulation disposition providing removable flow connection to an exterior supply recipient to said machine , presenting milk flux selection means and comprising all components exposed to the milk circulation in said machine including a second beverage discharge , <EOS>