Testing & Compliance

Matcha naturally contains L-theanine, but the amount varies. See what analytical studies establish, what labels cannot tell you, and when a test report is needed.

Matcha can leave a visible green mark on clothing, but it is not automatically permanent. Fabric, drink ingredients, time and care instructions determine the result.

Cats should not be intentionally given matcha because it contains caffeine. Learn what information to collect and when to contact a veterinarian after exposure.

A matcha latte can be creamy, vegetal, umami-rich, mildly bitter or sweet. Milk, matcha dose, sweetener and temperature determine which notes dominate.

Matcha contains catechins, but direct clinical evidence for ordinary matcha drinks and skin outcomes is limited. Learn what green-tea trials can and cannot prove.

Matcha may contribute to loose stool or urgency in some people, but the powder is not always the cause. Separate caffeine, dose and latte ingredients from coincidence.

Measured matcha-water mixtures are mildly acidic in published tests, but pH varies with the powder, concentration, water and recipe. Learn what the number does and does not mean.

Matcha has not been proven to treat period cramps. Green-tea observational findings are interesting but cannot establish relief, dose or cause and effect.

Rinse a bamboo matcha whisk promptly, clear residue gently in clean water, inspect the inner tines and let it dry in open air. See what to avoid and when to replace it.

Matcha contains dietary fiber, but a normal 1.5–3 g serving provides far less than a 100 g composition figure suggests. See the dose arithmetic and labeling limits.