We went to nantou and stayed at a minsu called laowu pension. Minsu is homestay. As part of the stay they brought us to a grape vine. You can pluck your own grapes at a cost around s$20 or less. The grapes are really top quality like you are tasting wine just by eating the grapes. You can check out this website if anyone is interested in staying in homestay. It is a top notched homestay. http://www.excellentpension.com.tw/content.php?page=&top_id=2&area_id=&id=17