- What time does
- Extending later infusions
- When to stop
- Variables that override the chart
- A practical method for a new tin
- Health, in proportion
- Timing without a timer
- How the leaf changes across a session
- Frequently asked questions
- How long should I steep green tea?
- Why is oolong steeped so briefly?
- Can I steep black tea for five minutes?
- Does steeping time affect caffeine?
- Should I extend every infusion?
- How do I know when to stop?
Steeping time is the second lever after temperature, and it has more effect on bitterness than most drinkers expect. Green tea wants 45 to 90 seconds, white tea 90 seconds to 3 minutes, oolong 10 to 30 seconds for the first infusion, and black tea 2 to 3 minutes. The general rule is short and repeated rather than long and once.
What time does
Steeping time is how long the leaf is in contact with water, and extraction continues for as long as it is. The compounds that come out first are the water-soluble sugars, amino acids and lighter aroma compounds, which read as sweet and fragrant. The compounds that come out later are the heavier catechins and tannins, which read as bitter and drying.
A short steep therefore samples the first part of the extraction; a long one samples the whole curve. That is why a green tea steeped for 30 seconds is sweet and one steeped for three minutes is bitter, even though the leaf is identical.
The shape of the leaf changes the curve. A rolled oolong pellet releases slowly, so 20 seconds gives a full-flavored but not bitter infusion. A fine needle green tea releases fast, so 90 seconds is already generous. A dense white bud releases slowly, so two minutes is reasonable rather than excessive.
| Leaf shape | Extraction speed | Suggested first steep |
|---|---|---|
| Fine needle or bud | Fast | 45 to 90 seconds |
| Flat or twisted leaf | Medium | 60 to 120 seconds |
| Dense rolled pellet | Slow | 10 to 30 seconds |
| Compressed cake | Very slow | 2 to 4 minutes, or simmer |
| Broken leaf | Very fast | 60 to 90 seconds |
Extending later infusions
Each successive steep extracts less, because the leaf is losing its soluble content. The standard practice is to add 5 to 10 seconds per infusion for oolong and green tea, and 20 to 30 seconds for black tea and white tea. A typical oolong sequence runs 10, 15, 20, 30, 45 and 60 seconds.
That progression is not arbitrary. If you keep the time constant, the second infusion is weaker than the first and the fourth is thin. Extending keeps the strength roughly level, which is what makes a gongfu session feel balanced.
The progression breaks down eventually. At some point extending the time does not recover the flavor, and the leaf is spent. That point is usually the sixth or seventh infusion for a good oolong, the third for a green tea, and the fourth for a white tea.
When to stop
- Stop when the liquor turns pale and the aroma is gone, not when the leaves look used.
- Stop when a one minute extension produces only color and no flavor.
- For green tea, two or three infusions is normal; a fourth is usually colored water.
- For oolong, seven to ten short infusions is realistic for a good leaf.
- For dark tea and aged white tea, you can move to simmering once steeping stops giving flavor.
Pushing a spent leaf is the most common mistake in gongfu brewing. Long final steeps produce a bitter, woody infusion that tastes worse than stopping earlier. The session should end while the tea still tastes of something.
Variables that override the chart
Ratio matters as much as time. A stronger ratio extracts faster in real terms, so 7 g per 100 ml needs a shorter time than 3 g per 150 ml. If you double the leaf, halve the time and taste before committing.
Temperature interacts with time. A tea brewed at 100 C extracts roughly twice as fast as one brewed at 80 C, so a time that works at 80 C will over-extract at 100 C. When you change the temperature, change the time with it.
Age changes it too. An older white tea or oolong has less moisture and a tighter structure, so it needs slightly longer. A very fresh green tea can go bitter within seconds of the nominal time, especially if it was picked late.
A practical method for a new tin
Start at the low end of the range for the tea type, taste, and adjust. For an unfamiliar oolong, try 10 seconds, then 15, then 20, and pick the one that tastes best without being thin. For an unfamiliar green tea, try 45 seconds, then 60, then 90. The point is to find the tin’s own curve rather than to follow a table.
Write it down. Tea tins accumulate, and a note on the tin of the ratio, temperature and time that worked is worth more than any general guide. Producers change from year to year, and the best time for last year’s leaf may not be the best for this year’s.
Health, in proportion
Steeping time changes how much caffeine and catechin ends up in the cup. A long steep delivers more of both, which is why an over-steeped tea feels more astringent and more stimulating. It does not change what the tea is, and no tea treats disease.
Timing without a timer
Most experienced brewers stop counting and watch the liquor instead. For a light tea, the color in the gaiwan changes from pale to gold within a few seconds, and the pour starts as soon as the color arrives. For a dark tea the change is slower and less visible, which is why those teas are easier to time by counting than by eye.
A timer is still worth using when you change something, because it removes one variable. Once a tea is familiar, the color and the smell are enough.
How the leaf changes across a session
A well-made oolong moves through recognisable stages across a session. The first infusion is aromatic and light, dominated by the surface compounds that dissolve immediately. The middle infusions are the fullest, carrying sweetness and body together. The later infusions thin out into a mineral, slightly sweet water that many drinkers find the most refreshing part of the session.
Understanding the shape of that curve makes the timing easier. The middle infusions need only a little more time than the first, because the leaf is fully open by then. The final infusions need a lot more time, because there is very little left to extract.
A green tea does not have this shape. Its first infusion is the best and the second is already thinner, which is why the chart’s advice to stop after two or three is not a limitation of the method but a fact about the leaf.
Frequently asked questions
How long should I steep green tea?
45 to 90 seconds at 80 to 85 C. Longer than that and it turns bitter and loses the aroma you paid for.
Why is oolong steeped so briefly?
The rolled pellet releases flavor quickly and keeps releasing across many infusions. Ten to 30 seconds for the first steep is normal.
Can I steep black tea for five minutes?
You can, and some people prefer it. It will be stronger and more astringent, and it will not leave much for a second cup.
Does steeping time affect caffeine?
Yes. Longer steeps extract more caffeine, as well as more bitter compounds.
Should I extend every infusion?
Yes, by 5 to 10 seconds for oolong and green, and 20 to 30 for black and white, until the leaf gives out.
How do I know when to stop?
When extending the time produces color but no flavor. Stop there rather than pushing the leaf further.
