The ornamental design for a cookware side handle, as shown and described.
FIG. 1 is a perspective view of the “cookware side handle”, showing my new design;
FIG. 2 is a right side view thereof; the left side elevation view being the mirror image thereof;
FIG. 3 is a top view thereof;
FIG. 4 is a bottom view thereof;
FIG. 5 is a back view thereof; and,
FIG. 6 is a front view thereof.
The broken lines immediately adjacent the shaded areas in FIGS. 1, 2, 5 & 6 represent the bounds of the claim which form no part of the claimed design.