Ceremonial matcha is delicate. Once opened, it stays at peak quality for about 2 months if kept in an airtight container in a cool, dark place. If your tin's been sitting since last spring, the color may look dull and the taste will be flat.

A simple test: if the powder looks brownish or smells musty, it's past its best. Don't force it—you'll just ruin the first cup back. Grab a fresh tin of BrewNova ceremonial and you'll notice the difference immediately.