This is a mini ripe pu-erh tou cha (bird's nest) that comes ensconced in a green mandarin shell. You can steep this puerh tea along with the mandarin that yields in a fun brew that is redolent with a bright citrus notes.  

An order will include 14 tou chas (approx 100 gm)

STEEPING TIPS for gong fu style 
Crack the shell of the mandarin
Immerse the entire tou cha in a gaiwan
Water temp 195-200F
Quick Rinse
Steep 3-5 seconds for multiple steeps