This's nearly comparable to 70 80 mg of caffeine, based on Balancing the Body’s Qi for Holistic Health Benefits matcha quality and helping size (two, three). What green tea contains the vast majority of caffeine? Matcha has a lot more caffeine than the brewed varieties of green teas. The typical matcha preparation uses 1/2 teaspoon (about three grams) of matcha per 8 ounces of warm water...