What Kind of Black Tea is the Strongest? The Ultimate Guide
                                
                                
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                                    4 min read                                
                            
                                While taste is subjective, Assam tea typically contains a higher caffeine content than many other black teas, with an average of 50 to 90mg per cup. So, what kind of black tea is the strongest? The answer depends on whether you are seeking the most intense flavor or the highest caffeine content.