You have to pay attention to the fact that some foods are dyed, otherwise how can you look so bright? For example, some black foods, Xiaobian said, to identify the true and false of black foods, it is very simple. Let's teach you some moves today.
Black food, such as black sesame, black beans and black rice, is the most easily dyed food. Pay attention to the natural color when purchasing. Pick up a handful of black rice, black beans, their color should not be exactly the same. Some particles are deeper, some are shallower. Wipe off the floating dust. The surface should be glossy and not dark. However, the color of black is the same, no difference, no natural luster on the surface.
When you get home, soak the black seeds in cold water. They don't change color for the first minute or two. Then, there will be color exudation. But the color is reddish, not black. Because the color source of black seed is anthocyanin, it is not pure black, but ochre or purplish red. If it is dyed black food, the pigment must be black. If the black substance is a water-soluble pigment, it will dissolve in water quickly, and it is pure black and opaque.
In this way, it's easy to identify whether there is any black colored food. Collect these tips. Next time you go to the supermarket, you should learn to identify.