Not only is purple sweet potato porridge simple and easy to make, but it is also nutritious, soft, glutinous, and sweet, making it a very popular porridge. However, observant people will notice that while the sweet potato itself is purple, the cooked porridge turns blue. This phenomenon confuses many people and makes them hesitant to eat it. What should you do if the purple sweet potato porridge changes color? The porridge turns blue because purple sweet potatoes are rich in anthocyanins. Anthocyanins turn purplish-red in an acidic environment and blue in an alkaline one.
Purple Sweet Potato Porridge
Rice porridge is a slightly alkaline environment. When purple sweet potato is added, it turns blue, which is a normal phenomenon and can be eaten with confidence. If you don't like this color, just add a few drops of white vinegar or lemon juice when serving, stir it, and the porridge will turn back to purple.
Anthocyanins are widely found in foods such as blueberries, strawberries, mulberries, grapes, purple sweet potatoes, purple cabbage, and black rice. Appropriately consuming more of these foods in your daily diet can help remove free radicals from the body, enhance immune function, prevent cardiovascular and cerebrovascular diseases, and is very beneficial to your health.