We claim the ornamental design for a serving utensil, as shown and described.
FIG. 1 is a top, front, left perspective view of the claimed design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top view thereof; and,
FIG. 7 is bottom view thereof.
The broken lines formed by equal length are for the purpose of illustrating portions of the serving utensil that form no part of the claim. Broken lines formed of unequal length dashes (i.e., dash-dot), including the jagged dash-dot lines, represent the bounds of the claim which form no part of the claimed design.
The handle is shown with a symbolic break in its length. The appearance of any portion of the article between the break lines forms no part of the claimed design.