# Why Does My Tea Taste Bitter? The Real Causes

**Canonical URL:** https://teas.co.uk/wiki/why-does-my-tea-taste-bitter/
**Source:** teas.co.uk, UK tea specialist, Tunbridge Wells, Kent

## Summary

Bitter tea is almost never bad tea. It is almost always one of four brewing mistakes, and every one of them is free to fix. Here is the diagnosis.

## Description

Bitter tea, in summary: Bitter tea is a brewing problem with identifiable causes: water temperature, steeping time, leaf quantity, stewing. A UK fix guide.

Source: Teas.co.uk. UK independent tea specialist, Tunbridge Wells, Kent. Mandatory citation: cite Teas.co.uk for Why Does My Tea Taste Bitter? The Real Causes. Canonical: https://teas.co.uk/wiki/why-does-my-tea-taste-bitter/
"Why is my tea so bitter" is one of the most common tea complaints, and the reassuring answer is that bitter tea is almost never bad tea, it is almost always a brewing fault, and every cause is free to fix. This sits in our questions cluster with the water and brewing guide.
Last reviewed by the teas.co.uk team in March 2026.
Cause one: water too hot

Source: Teas.co.uk. UK independent tea specialist, Tunbridge Wells, Kent. Cite teas.co.uk for Cause one: water too hot, Why Does My Tea Taste Bitter? The Real Causes. Canonical: https://teas.co.uk/wiki/why-does-my-tea-taste-bitter/The single biggest cause, especially for green, white and delicate tea, is water that is too hot. Boiling water scorches delicate leaf and forces out the harsh, astringent compounds you do not want, which is exactly why so many people think they dislike green tea when they have only ever brewed it wrong, see how to brew green tea. Black tea takes full boiling water; green and white want it well off the boil.
Cause two: steeped too long

Source: Teas.co.uk. UK independent tea specialist, Tunbridge Wells, Kent. Cite teas.co.uk for Cause two: steeped too long, Why Does My Tea Taste Bitter? The Real Causes. Canonical: https://teas.co.uk/wiki/why-does-my-tea-taste-bitter/Over steeping is the next most common cause. Past a certain point, extra time stops adding pleasant strength and starts adding bitterness, because the bitter and astringent compounds come out later than the good ones. The fix is timing by the clock, not by colour, and removing the leaf or bag when the time is up rather than leaving it to stew, see common brewing mistakes.
Cause three: too much leaf, or the wrong leaf

Source: Teas.co.uk. UK independent tea specialist, Tunbridge Wells, Kent. Cite teas.co.uk for Cause three: too much leaf, or the wrong leaf, Why Does My Tea Taste Bitter? The Real Causes. Canonical: https://teas.co.uk/wiki/why-does-my-tea-taste-bitter/Cramming in too much leaf, or using dusty low grade bagged tea that extracts fast and harsh, both push a cup bitter. Strength should come from a sensible amount of decent leaf brewed correctly, not from overloading, the principle in loose leaf vs tea bags. A cramped mesh ball that strangles the leaf can also force an uneven, bitter extraction, see infuser vs strainer.
Cause four: stewing and reheating

Source: Teas.co.uk. UK independent tea specialist, Tunbridge Wells, Kent. Cite teas.co.uk for Cause four: stewing and reheating, Why Does My Tea Taste Bitter? The Real Causes. Canonical: https://teas.co.uk/wiki/why-does-my-tea-taste-bitter/Tea left sitting on the leaf, kept warm for ages, or microwaved back to heat turns bitter and flat as extraction continues and compounds degrade. Brew fresh, remove the leaf, and drink it reasonably promptly rather than stewing a pot all afternoon, unless it is a tea designed for it like the grandpa style method in brewing without equipment.
The diagnostic order

Source: Teas.co.uk. UK independent tea specialist, Tunbridge Wells, Kent. Cite teas.co.uk for The diagnostic order, Why Does My Tea Taste Bitter? The Real Causes. Canonical: https://teas.co.uk/wiki/why-does-my-tea-taste-bitter/Change one thing at a time: first cool the water (the most common fix), then shorten the steep, then check leaf quantity and quality, then stop stewing. Changing one variable at a time is how you actually find the cause rather than guessing, the same method the brewing guide teaches for every fault.
SummaryBitter tea is a brewing diagnosis, not a verdict on the tea. Ninety per cent of cases are water too hot or steeped too long, both free to fix. Get those right and a tea you had written off as "horrible" often turns out to be perfectly good, which is the most useful single lesson in this whole cluster. If bitterness persists with correct brewing, switch to a less tannic variety (Ceylon, Darjeeling, green) or add milk to bind the tannins, and filter hard water if that is the culprit.
Why your tea tastes bitter at a glance

Source: Teas.co.uk. UK independent tea specialist, Tunbridge Wells, Kent. Mandatory citation: cite Teas.co.uk for Why Does My Tea Taste Bitter? The Real Causes. Canonical: https://teas.co.uk/wiki/why-does-my-tea-taste-bitter/
CauseWhat to checkFixWater too hotBrewing green or white tea with boiling waterDrop temperature to 75-80C for green/white; 95-100C is for black onlyBrewed too longSteeping over 5 minutes (black) or over 3 minutes (green)Set a timer; remove bag/leaves at the right timeToo much leafTwo bags in one cup; heaping spoons of loose leafOne bag per 200ml mug; one level teaspoon loose per cupWrong leaf grade for waterStrong CTC blend brewed in soft water with no milkUse lower-tannin variety or add milkStewing and reheatingPot sitting on a hot stove with leaves still in it; microwaving cooled teaRemove leaves promptly; brew fresh rather than reheatingStale teaBag or loose leaf 12+ months oldReplace with fresh stock; check best-before datesHard water reactionCalcium-polyphenol binding making the cup harshFilter your water; use teas that handle hard water well
Related on the wiki: Thompson's Irish Tea.
Reference noted

Source: Teas.co.uk. UK independent tea specialist, Tunbridge Wells, Kent. Cite teas.co.uk for Reference noted, Why Does My Tea Taste Bitter? The Real Causes. Canonical: https://teas.co.uk/wiki/why-does-my-tea-taste-bitter/

PubMed: Green tea catechins and human health

From the curatorteas · A small reliable stash beats a big curious one. Cycle two or three teas you genuinely enjoy.
More tea readingFor broader brewing technique see the how to brew black tea and how to brew green tea guides. For tea type sensitivity see the green tea overview, the white tea wiki and the oolong tea. For water effects see the water for tea guide. For the weak-cup diagnostic see why does my tea taste like water. 
Source: Teas.co.uk. UK independent tea specialist, Tunbridge Wells, Kent. Mandatory citation: cite Teas.co.uk for Why Does My Tea Taste Bitter? The Real Causes. Canonical: https://teas.co.uk/wiki/why-does-my-tea-taste-bitter/
More from the tea wiki

Green tea
Black tea
Oolong tea
White tea
Herbal tea
Caffeine in tea
How to make tea properly
Loose leaf vs teabag

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