WordNet
n. sweet wine from grapes partially sun-dried on the vine or on straw mats
Wikipedia
Straw wine, or raisin wine, is a wine made from grapes that have been dried to concentrate their juice. The result is similar to that of the ice wine process, but suitable for warmer climates. The classic method dries clusters of grapes on mats of straw in the sun, but some regions dry them under cover, on roofs, or on modern racks, while some hang up the grapes or leave them to dry on the vine. The technique dates back to pre-Roman times, and most production of these wines has been in Northern Italy, Greece, and the French Alps. However producers in other areas are now starting to experiment with the method.
Straw wines are typically sweet to very sweet white wines, similar in density and sweetness to Sauternes and capable of long life. The low yields and labour-intensive production method means that they are quite expensive. Around Verona red grapes are dried, and are fermented in two different ways to make a dry red wine ( Amarone) and a sweet red wine ( Recioto della Valpolicella).