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 elevation view thereof; the left side elevation view being the mirror image thereof,
FIG. 3 is a top plan view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a front elevation view thereof; and,
FIG. 6 is a back elevation view thereof.
The broken lines in FIGS. 1, 2, 5 & 6 are for illustrative purposes only, depicting the environment of the new design, forming no part thereof as claimed.