The ornamental design for a handle for a cookingvessel, as shown.
FIG. 1 is a left-side view of my new design relating to an handle for a
cooking vessel, the right-side view being symmetrical and specular with
respect to the left-side view;
FIG. 2 is a top plan view of my new design;
FIG. 3 is a bottom plan view of my new design; and,
FIG. 4 is a three-quarter front view of my new design.