ingredients Green tea, Egyptian spearmint, spearmint oil Always store in a cool, dry, airtight and light-proof place. When stored correctly, green tea mint can be kept for around 12 months. Preparation Boil water until sparkling, leave it for five to ten minutes stand open and cool down. Then the water is cooled down to 80-90 degrees. Pour it over the loose tea. Take a teaspoon per cup and Let the infusion steep for three minutes.