brick tea

from the GNU version of the Collaborative International Dictionary of English

• n. tea leaves and young shoots, or refuse tea, steamed or mixed with fat, etc., and pressed into the form of bricks. It is used in Northern and Central Asia.

from The Century Dictionary and Cyclopedia

• n. A kind of tea formed by softening the larger leaves and refuse twigs and dust of the tea-plant with steam or boiling water and molding them into a brick-shaped mass.