What Teas Have the Most Caffeine? A Guide to the Strongest Brews
                                
                                
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                                    4 min read                                
                            
                                According to research from Seven Teas, the green tea powder known as matcha delivers a formidable caffeine punch of around 75 mg per cup, making it a top contender when exploring what teas have the most caffeine. However, the reality of tea's caffeine content is more complex, with several surprising factors influencing the final kick in your cup.