Is a pig's stomach fattening? The nutritional facts and cooking methods revealed
                                
                                
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                                    5 min read                                
                            
                                According to nutrition data, a 100-gram serving of simmered pig's stomach contains approximately 157 calories, which is considerably less than a similar portion of pork belly. So, is a pig's stomach fattening? The answer depends less on the food itself and more on how it is prepared and consumed.