We have been using this loose leaf tea brewer in our shop to create exquisite cups of tea for the past 10 years. What makes this brewer steep an excellent cup of tea is the space this unit provides for leaf expansion. Leaf expansion is a critical aspect to brewing an excellent and flavorful cup of tea. This loose leaf tea brewer is easy to clean. Simply discard the tea leaves and rinse. It is dishwasher safe, however we recommend simply rinsing to clean. This is a BPA-free product and works with any size cup.