Why is my matcha clumpy?

Clumpy matcha is frustrating — you end up with floating powder lumps or gritty bits at the bottom. Here’s why it happens and how to fix it.

Why Matcha Clumps

Matcha is ground extremely fine — finer than talcum powder. At this size, particles tend to stick together due to:

  • Static electricity — The particles cling to each other
  • Moisture absorption — Matcha attracts humidity from the air
  • Compression — Sitting in a package compacts the powder

This is normal. Even high-quality matcha clumps. It doesn’t mean the matcha is bad.

The Fix: Sift Before Whisking

Sifting is the most important step for clump-free matcha.

  1. Place a fine mesh strainer over your bowl
  2. Add your matcha to the strainer
  3. Use a spoon or the back of a measuring scoop to push the matcha through
  4. All clumps will be broken up

This takes about 10 seconds and makes a noticeable difference.

What to Use for Sifting

  • Fine mesh tea strainer — Works great, cheap
  • Matcha sifter (furui) — Traditional tool, same function
  • Small cooking strainer — Fine mesh works
  • Flour sifter — Works but is overkill

If your strainer isn’t fine enough, matcha clumps will pass through. The mesh should be very fine.

Whisking Technique Matters

Even sifted matcha can re-clump if you don’t whisk properly.

With a Bamboo Whisk

  • Use W or M shaped motions, not circles
  • Whisk vigorously — speed matters
  • Hold the whisk vertically and move quickly
  • Continue until no powder is visible at the bottom

Common Whisking Mistakes

  • Stirring in slow circles (doesn’t break up clumps)
  • Not whisking long enough (15-20 seconds minimum)
  • Using too little water (the matcha can’t disperse)

Storage Affects Clumping

Improperly stored matcha absorbs moisture and clumps worse.

Prevent excessive clumping:

  • Keep matcha in an airtight container
  • Store in a cool, dark place (or refrigerator)
  • Use the matcha within 1-2 months of opening
  • Don’t let water or wet utensils contact the powder

Other Solutions

Electric Frother

An electric milk frother can break up clumps through sheer speed. It’s not traditional, but it works — especially for lattes.

Shaker Bottle

For iced matcha, a shaker bottle with a wire ball or spring works well. The shaking action breaks up clumps.

Make a Paste First

An alternative to sifting:

  1. Add matcha to your bowl
  2. Add just a tiny amount of water (less than an ounce)
  3. Mix into a smooth paste with a spoon
  4. Add the rest of your water
  5. Whisk to combine

When Clumping Indicates a Problem

Normal matcha clumps break apart easily when sifted or whisked. If your matcha:

  • Has hard clumps that won’t break up
  • Smells musty or off
  • Has changed color significantly

…it may have absorbed too much moisture and could be spoiled. Time for a new batch.