Disclosed is a pleasantly mild new acidic black tea beverage in which bitter and astringent flavors are suppressed. The black tea beverage packed in a container contains sweeteners and fruit juice and 0.001 to 0.005 wt % caffeine, and is characterized by having acidity of 0.02 to 0.08%, and, when the acidity is within the aforementioned range, and a sweetness/dryness of 1.50 to 2.50, said sweetness/dryness being expressed using sweetness (total solids content) and acidity.以提供一苦澀味及收斂味為被抑制,且因低刺激而感覺溫和之新式酸性紅茶飲料。提案一種裝於容器之紅茶飲料,其係含有咖啡因0.001~0.005質量%,且含有甘味料與果汁;其特徵為酸度在0.02~0.08%之範圍,且當酸度為前述範圍時之以糖度(全體固形量)與酸度所示之甘辛度為在1.50~2.50之範圍。