Tea
Matcha
Green or white
Black or oolong
Herbal
Pu-erh
Container
Opaque airtight tin
Resealed pouch
Clear jar
Open or folded bag
Spot
Cool, dark cupboard
By the kettle or hob
Months since opened:
3
Pick a tea, a container and a spot, then drag the months. The bands move: a clear jar by the hob shortens every window. Rough rules of thumb, not measured shelf lives.