Shuang Quan Black Tea. Sells only black tea, available in cold, warm, and hot. Comes in two flavors: salty (sweet) and half-salty (half-sweet). Unlike typical bubble tea's hot brew and cold brew, this tea is shaken with ice after cooling, resulting in a rich and excellent flavor. Sells only black tea, available in cold, warm, and hot. Comes in two flavors: salty (sweet) and half-salty (half-sweet). Unlike typical bubble tea's hot brew and cold brew, this tea is shaken with ice after cooling, resulting in a rich and excellent flavor. Address: 臺南市中西區中正路131巷2號 Hours: 00:00–23:59 Tainan