barren chilly clean cool damp foggy fresh grey hard lifeless opening rocks rough solid texture tough unrelenting wet crunchy cultivar cultivated earth-apple edible elongated food ginger-like helianthus-tuberosus herbaceous-perennial inulin Jerusalem-artichoke knobbly nutty potato-substitute root-vegetable sunchoke sunflower-species sunroot topinambour tubers uneven vegetable