GABA tea
GABA tea (other names: Gabaron, Jia Wu Long cha, Jing Bai Long cha, 佳叶龙茶) is tea that has undergone a special processing which leads to high accumulation of GABA (the chief inhibitory neurotransmitter in the central nervous system) in the tea leaves. This process involves storing the leaves in an oxygen-free nitrogen gas chamber.