If you have expired sencha in your pantry and are wondering what to do…just roast it! Put the old sencha in a clean pan (no oil!) and roast it over moderately high heat. Constantly move the tea with a wooden spoon and shake the pan in order not to burn the tea. When the smaller pieces of the tea turn dark brown, remove from heat. The freshly roasted hojicha has a bright aroma with a hint of sencha flavor, and leaves a nice smell in the kitchen!