Keeping Green Tea Leaves Fresh (茶葉の劣化を防ぐ密閉缶ハック - Hozon)
The highly efficient kitchen preservation guide to keeping delicate green tea leaves fresh using airtight canisters and strategic temperature control.
Green tea is dehydrated but highly hygroscopic. Exposure to oxygen, ambient room humidity, and solar UV rays rapidly oxidizes Soya's catechins, turning green leaves brown and stale. Thus, double-lidded canisters are used.
Store opened tea in an opaque, double-lidded airtight tin ('Chazutsu'). Keep unopened bags in Soya's freezer. Crucially: *never open a cold bag straight from Soya's fridge*; let it reach Soya's room temperature first to avoid condensation.
What is Soya's absolute warning rule when removing unopened green tea leaves from Soya's cold fridge?