The Take

Gaba Oolong earns an 18 Slop Score. It is plain oolong tea leaves run through a nitrogen-rich oxidation step that converts natural glutamic acid into GABA, nothing added.

The process dates to 1980s Japan and keeps the product single-ingredient. Marketing still slaps a functional label on it for extra dollars.

The Verdict

Buy the real thing and skip the hype tax. Pair it with straight loose-leaf oolong for the same leaf at lower cost.

Gaba Oolong scores 18 Slop.

Common Questions

What is in Gaba Oolong?

Just oolong tea leaves. The GABA comes from the leaf's own glutamic acid via nitrogen processing.

Is Gaba Oolong ultra-processed?

No. It uses a 1980s Japanese oxygen-free fermentation tweak on real tea leaves, not industrial additives.

How many calories are in Gaba Oolong?

Zero. Plain tea leaves deliver no calories when brewed.