How Many Calories Are in a Huge Mushroom? The Surprising Nutritional Breakdown
                                
                                
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                                    4 min read                                
                            
                                Despite their impressive size, a giant puffball mushroom contains only about 19 calories per cup, making a huge mushroom an incredibly low-calorie food. This low-density nutrient profile, packed with vitamins and minerals, makes large fungi an excellent addition to a health-conscious diet.