the various flavors 1 4 can be had by referring to fig2 wherein the path in respect of additive flavor 3 is specifically shown additive flavor 3 enters the flavor 3 inlet port i e the bore 38 and then flows through a flavor 3 passageway 38 a 38 b to a flavor 3 ring 38 c additive flavor 3 then flows around and through flavor 3 ring 38 c and down four flavor 3 down tubes 38 d to four flavor 3 outlet channels 38 e from whence additive flavor 3 exits four outlet orifices or orifices 38 f only three outlets 38 f are shown into cylindrical passage portion 8 b it can be appreciated that the four outlet orifices for each of additive flavors 1 4 are positioned equidistant around passage portion 8 b at this point the flavor additive ejected from the four outlet orifices 38 f is directed into and joins the major flow of the particular frozen slush beverage as it flows through and out of central vertical passage or bore 8 referring again to fig1 in use of the injection device 7 a flavor selection mechanism 70 is provided flavor selection mechanism 70 includes a horizontal housing portion 72 to which are mounted selection switches 74 a 74 b 74 c and 74 d corresponding to each of the four additive flavors a vertical housing portion 76 is secured to and over spring housing 4 and includes a proximity sensor 78 indicated by dashed lines proximity sensor 78 is retained within housing 76 and senses.