What Kind of Acid is in Rhubarb? The Full Guide to Oxalic Acid
                                
                                
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                                    6 min read                                
                            
                                Rhubarb leaves contain toxic levels of oxalic acid, a naturally occurring compound also found in smaller amounts in foods like spinach and beetroot. Understanding **what kind of acid is in rhubarb** is crucial for safe preparation and consumption of this tart spring vegetable.