Tea bricks are composed of tea twigs and leaves that are finely ground and pressed and preserved into dense forms for the purpose of trekking from China to Siberia, Mongolia, and Tibet - where they were also traded as a form of currency. In Tibet, they have invented special tools for breaking, washing, and brewing the bricks. The tea brick encompasses a vast tea history in China that is symbolic of its importance in culture, trade, and commerce. Their ornamental designs make them an interesting object of tea lore and a beautiful token of tea history. They may be chipped and steeped as gourmet tea.
While this brick tea did exist within the 18th century, it was almost exclusively kept in Asia during this era.