Why Is My Matcha Bitter? 7 Common Mistakes and How to Fix Them

If your matcha tastes too bitter, start with the water temperature and the ratio of powder to liquid. Water around 70–80°C, a measured portion and thorough mixing are useful starting points. You do not necessarily need more sweetener—or a completely different recipe.

A little bitterness can be part of matcha's character, alongside vegetal notes and umami. The aim is a balance you enjoy. A dry, puckering sensation is often described as astringency; a gritty texture is a separate mixing problem. Identifying what bothers you makes it easier to adjust the next cup.

1. Using water that is too hot

If you pour freshly boiled water straight onto matcha, the result may taste harsher than you expect. Try water at 70–80°C and compare it with your usual cup, keeping everything else the same.

The fix: use a temperature-controlled kettle or thermometer. If you have neither, let boiled water cool before using it. Cooling time varies with the amount of water and the container, so a fixed number of minutes will not guarantee a particular temperature.

2. Adding powder without measuring it

A heaped spoonful can hold much more matcha than a level one. Increasing the powder while keeping the liquid unchanged makes the drink more concentrated and may make its bitterness more noticeable.

The fix: begin with about 2 g of matcha per serving, ideally weighed. Keep this amount steady while you adjust the rest of your recipe. You can increase it later if you prefer a stronger flavour.

3. Treating a concentrated base as a finished cup

Whisking 2 g of matcha with 30–35 ml of water produces a concentrated base for a latte or an americano. It will taste much stronger than the finished drink. That does not automatically mean the tea or technique is wrong.

The fix: add water or milk a little at a time. For a latte, try 150–200 ml of milk or a plant-based drink. For a lighter cup of matcha tea, 2 g with around 60 ml of water is another starting point. Adjust to your taste.

4. Skipping the sieve

Fine matcha powder can form small clumps in storage. A clump in your drink gives an uneven, concentrated mouthful. Sifting helps the texture; it does not remove the tea's natural bitter flavour.

The fix: pass the dry powder through a fine-mesh sieve before adding water. Break up the clumps gently rather than pushing wet paste through the sieve later.

5. Stirring slowly instead of whisking

Matcha is finely ground tea leaf. It disperses in liquid rather than dissolving like sugar, so a few turns with a spoon may leave dry pockets or an uneven drink.

The fix: whisk briskly with short W- or M-shaped movements until evenly mixed. A bamboo whisk works well; a handheld milk frother in a taller cup is a practical alternative. Prepare the water-and-matcha base before adding milk. Some settling over time is normal—stir again before drinking.

6. Leaving the pack open or near heat

Air, light, heat, moisture and strong nearby smells can affect matcha's freshness. An old or poorly stored powder may taste dull or stale. Changing the water temperature cannot restore lost freshness.

The fix: follow the packaging instructions and close the pack tightly after each use. Keep it away from the stove, direct sunlight and moisture, and use a clean, dry spoon. If you refrigerate it, keep it sealed while it returns to room temperature before opening to reduce condensation.

7. Choosing a matcha style that does not suit your drink

Matchas differ in flavour. A more assertive powder may suit baking or a milky latte but feel too sharp when served with a small amount of water. A label such as “ceremonial” alone cannot tell you exactly how a tea will taste.

The fix: check the product's intended use and flavour description. Compare teas using the same measured recipe. Choose for the cup you actually enjoy, rather than colour or a grade name alone.

A simple routine for your next cup

1. Sift about 2 g of matcha into a bowl.
2. Add 30–35 ml of water at 70–80°C to make a concentrated base.
3. Whisk until evenly mixed, then add water or milk to your preferred strength.
4. Change one variable at a time and taste before adding sweetener.

For the complete method, read how to prepare matcha at home. Prefer a warm, creamy version? Try our winter matcha latte ideas.

Does bitter matcha always mean poor quality?

No. Concentration, preparation, storage and personal taste all matter. If the drink is gritty, work on sifting and whisking first. If it is smooth but too strong, adjust the temperature and proportions before judging the powder.

Explore Munchies matcha for home preparation and the matcha preparation set when you are ready to build your routine.

Further preparation references: Ippodo's usucha method and matcha storage guide.