Caffeine in Gunpowder Tea | Healthfully- what is the difference between gunpowder green tea and regular green tea ,4/10/2011· All green teas contain between 2 and 4 percent caffeine. The specific caffeine content for gunpowder green tea depends on a number of factors, including how much tea is used in relation to water and how long the tea is allowed to steep 3 4 5. The less tea to water you use and the shorter the steeping time, the lower the caffeine content of your ...Green Tea Powder vs Matcha16/3/2015· Green tea powder is not always matcha. The term green tea powder or powdered tea just means that it is any kind of tea ground into a powder. It could come from any part of the plant, not always leaves, and grown and processed in a number of ways. Its quality and origin can be questionable.