good thought on the sprouts. i'm not usually out that long (viz. 7d).
depending upon locale and time of yr, i may supplement with some "wild" produce, i.e., plants, nuts, roots, berries.
sometimes pickin's can be mighty slim (i'm no Euell Gibbons), other times, particularly if i'm not in deep forest, but some meadows are around, a pretty good "harvest" can occur.