Tea strainers are a useful accessory for ensuring that you get the purest filtered tea experience. Even the finest loose leaf teas will inevitably have some tea dust or small leaf particles. After the first wash, there will often be small bits of tea leaf that are seen in the tea cup. Many tea practitioners will use an decorative tea strainer to filter the tea as they pour it from their gaiwan or teapot into their tea pitcher, fair cup or gong dao bei. This insures that the tea liquor or tea soup is as clear as possible.