2. Cucumber is the best food to replenish water in summer, and its water content is the highest among all foods. Cucumber contains picroside, which has certain anticancer effect. In addition, cucumber is cool and has the effects of clearing heat, diuresis and detoxification. Cucumber is very suitable for cold salad, such as cucumber mixed with fungus and garlic.

3, fresh cucumber skin has thorns, if there are no thorns, it means that cucumber is old, it is best to be the kind of thorns that will break when touched lightly. Cucumber with small and dense thorns tastes better, while cucumber with large and thin thorns does not taste like cucumber. The vertical lines on the delicious cucumber epidermis are prominent, which can be detected by touching them with your hands. And those cucumbers with smooth surfaces and no vertical stripes are not delicious.