 Small scale productions were laid out on flat roofs; however, if this still happens, it is extremely rare nowadays.Under less labour-intensive versions of the technique, easily portable racks might be used instead of mats or nets, or the grapes are left lying on the ground beneath the vines, or even left hanging on the vine with the vine-arm cut or the stem twisted.Technically speaking the grapes must be cut off from the vine in order for the wine to be a 'straw wine'.