The ornamental design for a foodjar, as shown and described.
FIG. 1 is a perspective view of the food jar;
FIG. 2 is a front view of the food jar;
FIG. 3 is a rear view of the food jar;
FIG. 4 is a right side view of the food jar;
FIG. 5 is a left side view of the food jar;
FIG. 6 is a top view of the food jar; and,
FIG. 7 is a bottom view of the food jar.
The broken lines showing in the figures are included for the purpose of illustrating portions of the food jar that form no part of the claimed design. The dash-dot lines showing in the figures are included for defining the bounds of the claimed design that form no part therof.