Today businesses use the latest soft drink technology, extracting the tea juice, killing germs with high temperatures, then using vacuum packaging. Without oxygen, the tea will not be able to produce excessive tannic acid.
而今業者利用現代食品科技，將茶汁粹取出來，高溫殺菌，再抽離空氣，裝入罐中，罐中缺氧，茶汁就不會繼續發酵，釋出過多單寧酸了。