How much caffeine is in pu-erh tea? A definitive breakdown
                                
                                
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                                    4 min read                                
                            
                                According to a 2011 study, ripe (shou) pu-erh tea typically contains 60-70 mg of caffeine per 8oz cup, while raw (sheng) contains 30-45 mg. This surprising fact reveals the complexity of determining precisely how much caffeine is in pu-erh tea, as it is far from a simple calculation.