Method 1: You can observe the color of laver, which contains phycoerythrin. Normal laver is dark brown or purple brown, which looks natural luster. Method 2: Take a small piece of laver and bake it with a lighter. Normal laver will be a little green after baking, and fake laver will turn black after baking, and it will also emit a pungent smell. Method 3: Prepare a bowl of clear water and soak laver in it for a period of time, and the color of the soaked water remains basically unchanged. If the water is bright purple, there must be something wrong with laver.

With the development of economy, people's eyes are on the existence of money under the temptation of huge interests. Many profiteers do whatever it takes to make money, and all kinds of fake food are really endless. China's food safety is really worrying. There are only a few 3 15 every year, and there are many unknown ones. This issue of food culture teaches you how to distinguish laver.

Tools/raw materials

basin

Methods/steps

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The quality of laver can be judged by the following methods: first, the smell, if laver has the smell of seaweed, it means that the quality of laver is good and there is no pollution and deterioration; If there is foul smell, musty smell and other peculiar smell, it means that laver has gone bad.

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Second, look, we can observe the color of laver. Porphyra contains phycoerythrin, so the color of laver we usually buy should be dark brown or purple brown, with natural luster. If the laver is thin, uniform, shiny and purple-brown or purple-red, it means that the quality of laver is good; If the thickness of laver is uneven, the gloss is poor, and it is red with green, indicating that the quality of laver is poor. At present, some black-hearted manufacturers will sell cheap seaweed or seaweed as laver in order to save costs. The second method is to soak a small piece of laver in water for a period of time. The color of the water soaked by real laver has remained basically unchanged. If the color of water turns bright purple, even the same color as ink, it must be false.

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The third kind is felt, dry and gravel-free. If there is a sense of humidity, it means that laver has restored moisture; If you encounter gravel, it means that there are too many impurities in laver. Both cases show that the quality of laver is very poor.

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Fourth, soaking, high-quality laver can hardly see impurities after soaking, and the leaves are relatively neat; Inferior laver not only has many impurities, but also has irregular leaves. However, if dried seaweed looks dark purple and turns green after soaking, it means that the quality is very poor, and even other seaweed is artificially colored and counterfeit. Discolored laver is not suitable for eating. However, if the package of purchased laver is labeled as baked laver, its color will be green, because laver will lose phycoerythrin during baking. Although roasted laver is suitable for long-term storage, it loses a lot of nutrients during processing and is not suitable for eating.

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Fifthly, another method is to take a small piece of laver and roast it with fire. After baking, good quality laver should be green, just like seaweed. If it turns yellow after baking, it is inferior seaweed.

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The sixth is to distinguish by taste. Some fake lavers are actually made of plastic film. The color of the soaked water is fine, but it will not be chewed in your mouth, and it is still very elastic when it is torn by hand.