How do you know if you've let things slide? Here are the warning signs:

• Your matcha tastes flat or a bit bitter—likely old powder or water that's too hot.
• The foam is weak or disappears quickly—your whisk may be splayed or your water temp is off.
• There are clumps in the bottom of your bowl—you're skipping the sifting too often.
• Your whisk smells musty—it's time to soak and air-dry it.

If any of these sound familiar, don't panic. The fix is usually just one of the monthly checks above. Adjust your routine and you'll be back to a clean cup by tomorrow.

A quick note: this is about brewing technique, not health claims. Matcha contains caffeine, so enjoy it in moderation. If you're sensitive, consider a smaller serving or a later-afternoon cutoff.