What Oil Has Zero Calories? Separating Fact from Fiction
                                
                                
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                                    3 min read                                
                            
                                A single gram of fat contains 9 calories, making it the most calorie-dense macronutrient. This scientific fact directly debunks the common myth surrounding the question, "What oil has zero calories?". All cooking oils are composed entirely of fat and therefore contain a significant number of calories.