As a well-known brand of commercial kitchen equipment, SHINELONG often receives feedback from many customers about various problems that occur during cooking. Among them, the blackening of mutton soup is a common problem. So why does the mutton soup turn black? Let the editor make a simple summary for everyone. Cause Analysis Pot Reason: Yes, this may be something that many people did not expect. When using an iron pot to boil mutton soup, the mutton soup will change from neutral to acidic during boiling, so it will corrode the iron pot and integrate the iron elements in the pot into the soup, causing the mutton soup to turn black. Iron will also turn black after being oxidized in the air. Therefore, the longer it is boiled, the darker the soup may be. Of course, the mutton soup at this time is fine and can be eaten normally, but the appearance is not so good. Improper boiling method: Inappropriate seasonings may be added during the boiling process, such as star anise, which may make the mutton soup black. Insufficient boiling time or improper heat may also affect the color of the mutton soup. Raw material problem: Mutton may contain more blood or other impurities. If it is not fully cleaned before boiling, it will also affect the color of the mutton soup. Solution: Change the pot: Since the cooking method of boiling will cause the mutton to change from neutral to acidic, it is recommended to use a stainless steel pot to boil the mutton soup, and avoid using an iron pot to reduce the iron element into the soup. If it is a mutton soup shop, it is recommended to buy a mutton soup pot. Adjust the boiling method: Before boiling, soak or blanch the mutton to remove blood and impurities. During the boiling process, maintain the appropriate heat and time to avoid overcooking or undercooking. Avoid adding seasonings that will make the soup black, such as star anise, to the mutton soup. Add whitening ingredients: During the boiling process, you can add some whitening ingredients, such as rice washing water, but the effect may be limited. Filtration: If the mutton soup has turned black, you can use a denser colander to filter it to remove some black matter, but it may be difficult to completely whiten it. Matters needing attention The blackening of mutton soup does not necessarily mean that it has deteriorated or contains toxic substances. For example, mutton soup cooked in an iron pot turns black because the iron element is integrated into the soup, which has no effect on the quality. However, if the color is abnormal and accompanied by a strange smell, it may be a sign of deterioration and should be avoided. When handling mutton and cooking mutton soup, pay attention to keeping the ingredients and pots clean and hygienic to avoid contamination by bacteria and other contaminants. By choosing the right pot, adjusting the cooking method and adding appropriate ingredients, you can try to avoid the blackening of mutton soup. If the mutton soup has turned black, you can try to improve it slightly by filtering and other methods. The above are the common reasons why mutton soup turns black. If you want to know more about the catering industry, you might as well pay attention to us. Of course, if you have kitchen equipment needs, you can also chat with us privately. SHINELONG is waiting for your arrival.