There are many kinds of mint, some are edible and some are not edible. For example, Japanese mint can't be eaten. It contains certain toxicity and can play an insect-proof role. In addition, absorbent cotton is not edible, and its peppermint oil is also toxic, but it is relatively rare. There are also some plants whose names are mint but not mint, such as catnip and Corsican mint, which are not edible. Although the taste is similar, it is actually not mint, and it may be poisoned if eaten indiscriminately.