FIG. 1 is a top perspective view of the cap and upper container neck of a dual condiment dispenser embodying the ornamental design comprising the present invention;

FIG. 2 is a top plan view of the cap thereof;

FIG. 3 is a side view of the cap thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a front view thereof;

FIG. 6 is a rear view thereof; and,

FIG. 7 is a top perspective view of the cap and upper container neck of a dual condiment dispenser embodying the ornamental design comprising the present invention, showing the cap in the closed position.

The broken lines in the drawing depict environmental subject matter only and form no part of the claimed design.