Of course. Add a proper amount of green tea, add less than 2/3 of boiling water in the thermos cup, cover the thermos cup, then let it stand for 24 hours, and then pour out the tea in the thermos cup, so that the onion and ginger flavor in the thermos cup can be well removed. Green tea, one of the main tea leaves in China, refers to a beverage made from new leaves or buds of tea trees without fermentation, after deactivation, shaping and drying.