Which Cava Has the Least Sugar? A Guide to Brut Nature
                                
                                
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                                    3 min read                                
                            
                                According to the D.O. Cava regulatory body, there are seven classifications for Cava based on sweetness. For those seeking the driest sparkling wine, the answer to which Cava has the least sugar is unequivocally 'Brut Nature', containing a maximum of just 3 grams of residual sugar per liter.