The ornamental design for a foodgrinder, as shown, and described.
FIG. 1 is a right side view of the food grinder;
FIG. 2 is a left side view of the food grinder;
FIG. 3 is a front view of the food grinder;
FIG. 4 is a rear view of the food grinder;
FIG. 5 is a top view of the food grinder;
FIG. 6 is a bottom view of the food grinder; and,
FIG. 7 is a perspective view of the food grinder.
The broken lines depicting the top enclosure, crank arm and base are for illustrative purposes only and form no part of the claimed design. Moreover, the two horizontal broken lines on the sidewall of the food grinder represent unclaimed lines on the claimed surface.