GABA oolong
GABA oolong

GABA oolong

Thee van Sander

A medium roasted oolong tea. GABA (Gamma Amino Butyric Acid) is a substance produced in your body in your brain where its function is to reduce anxiety and nervousness. There is a lot of information about it even though it is scientifically undetermined whether the GABA in tea (or supplements) can pass the blood/brain barrier.

  • From Taiwan
  • Si Ji Chuan variety (4 seasons)
  • 400-600m altitude
  • Natural farming
  • spring harvest

GABA in tea was discovered in the 1980s by a Japanese researcher at Japan's National Research Institute of Tea. When looking at how to preserve food, he discovered that if you expose tea to nitrogen during the oxidation process, the content of GABA goes up.

According to the Japanese government, the content of GABA should be at least 150mg/100gr of tea. This GABA contains more than 200mg/100gr of tea.

How is it made:

  • Approximately 2 weeks before picking, the plants are shaded, glutamic acid is produced as a result.
  • The leaf is picked and goes into a sealed vessel that is vacuum drawn to remove the oxygen.
  • Nitrogen is then put into this vessel for about 6 to 10 hours. The glutamic acid now turns into GABA (Gamma-AminoButyric Acid).
  • After this, the leaf is heated in the wok to stop the oxidation.
  • After this, the oolong is processed as normal, rolling, drying, compressing.
  • At last, the tea is baked to further dry
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