Can Too Much Sugar Prevent Yeast From Rising? The Science of Osmotic Pressure
                                
                                
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                                    3 min read                                
                            
                                Did you know that while a small amount of sugar is a food source for yeast, a high concentration can actually inhibit its growth? The answer to can too much sugar prevent yeast from rising is yes, due to a process called osmotic pressure that draws essential moisture from the yeast cells.