Purple potatoes and millet can be cooked together, green because the purple potatoes contain anthocyanins this is a water-soluble pigment, and anthocyanins will change color when encountered with acid and alkali, acidic will be red, alkaline will be blue green strong>. Because we usually home often drink tap water is generally alkaline, so the color of the water to cook purple potatoes is more blue-green.

Main ingredient: millet 50g, purple potatoes 1

Accessories: water moderate, baking soda moderate

1, purple potatoes, millet ready.

2, millet with water once, purple potatoes washed, cut small pieces.

3, add the right amount of water, put a little baking soda.

4, cover the pot, open the pot on high heat.

5. Turn down the heat and cook for about 15 minutes.

6, a bowl of purple potato millet porridge is ready.

The above content reference? People's Daily Online - purple potatoes and millet can be cooked together porridge to eat, turn green because the purple potatoes contain anthocyanins inside