Storing Matcha in a Commercial Kitchen

Larger volumes and more frequent access make conditions harder than at home.

Places to avoid

Near stoves and ovens — temperature Under sinks, near dishwashers — humidity Beside spices — odor transfer Near windows — light

Matcha's green comes from chlorophyll, which degrades under light, heat, and air, shifting toward brown. Aroma compounds evaporate.

Opening a large bag repeatedly during service admits air each time.

Move a day or two of stock into a small sealed container and leave the bulk closed elsewhere. That cuts how often the main package is opened.

Do the portioning with a dry container and dry spoon.

No wet spoons. The most common failure, and service areas sit close to washing.

Designate a measuring tool, keep it dry, and store it outside the bag.

Reasonable in hot weather, with a condition.

Opening a cold container causes room moisture to condense inside. Water on powder accelerates deterioration.

Let the container reach room temperature sealed before opening — several hours, which rules it out for anything accessed during service.

Refrigerate reserve stock; keep working stock at room temperature.

Multiple packages means labeling with opening dates.

The printed best-before says nothing about how long a package has been open, and that is the relevant number. Tape and a marker suffices.

Storage technique matters less than ordering what you will use.

Fifty servings per kilogram at 20 g. Work back from your volume and choose a size that clears in two weeks to a month.