Usually one of three reasons: water too hot, too much matcha, or the matcha has lost its freshness. Keep water below 80°C, start with ½ teaspoon, and store your tin in a cool, dark place.

The powder has absorbed moisture, hasn't been sifted, or wasn't massaged into a paste before whisking. Always sift first, make a smooth paste with a splash of water, then whisk in the rest. Keep your tin tightly sealed between uses.

Yes. A handheld frother, a shaker, or even a jar with a lid works. Any method that fully dissolves the powder will do.

Around 70mg per bowl — less than coffee, but released slowly alongside L-theanine. That's why matcha gives you calm, focused energy without the crash.

Ceremonial is the traditional way — sipped slowly, whisked with water, no milk. Premium is made for daily use, especially lattes. Both are high-quality — just made for different moments.