Green tea vs black tea
The same plant, taken through opposite decisions about one step. Everything people believe distinguishes them — colour, strength, caffeine, delicacy — follows from whether oxidation was prevented or completed.
What is being compared
Why these get confused
Two beliefs recur and neither survives contact with the catalogue. That black tea always has more caffeine: matcha and gyokuro measure higher than many black teas. And that green tea is 'unprocessed': fixation is processing, and a demanding kind.
Point by point
| Aspect | Green tea | Black tea |
|---|---|---|
| What they are | Camellia sinensis leaf heated shortly after picking to stop oxidation before it starts. | The same leaf, rolled to rupture its cells and held in warm humid air until oxidation is complete. |
| Production difference | Fixation — steaming or pan-firing — denatures the oxidation enzymes. Everything downstream happens to a leaf that will no longer brown. | No fixation until the end. Rolling, then a controlled oxidation room, then firing to arrest it. |
| Flavour difference | Commonly described as grassy, vegetal, marine or nutty depending on fixation method, with a fresh character and a drying finish. | Commonly described as malty, fruity, cocoa-like or brisk, with more body and a rounder, heavier finish. |
| Brewing difference | 70 to 85 °C and short steeps. Boiling water extracts the harsh fraction efficiently and the pleasant one poorly, which is the commonest fault in the category. | 95 to 100 °C and three to four minutes. Far more forgiving, and the only category routinely built to take milk. |
| Who may prefer each | Anyone drawn to fresh, savoury or delicate flavours, and anyone willing to pay attention to water temperature. | Anyone wanting something robust, forgiving, and workable with milk and sugar. |
The short answer
Neither is stronger, healthier or more caffeinated as a category — those are properties of leaf material, quantity and steeping rather than of oxidation. The honest difference is what the processing decision does to flavour, and it is a large one.
Not a ranking. TeaHQ publishes no ratings and does not know your occasion.