Put a proper amount of coarse sand or pebbles in the pot, stir-fry the raw walnuts together, first change the fire to a small one, and turn it over with a shovel constantly during the frying process. When the steam in the pot gradually decreases to disappear, pour out the walnuts and let them cool.
Pay attention to the following points when buying walnuts. ① Observe the color of walnut meat. Usually, the color of fresh walnut meat is light yellow or amber. If the color is darker, the older the peach pit, the worse the quality. (2) judging whether the product is fresh and edible by smelling it. If the product smells like oyster oil, it means that the product has gone rancid and cannot be eaten. (3) take a pair of walnuts and put them in your hand, that is to say, relative to its size, the weight should be enough; Walnuts are light and weightless in your hand, which generally means they are not ripe. (4) The oily skin of kernel is a sign of deterioration, and the white and fresh kernel is the best, followed by the "chrysanthemum heart" with oil stains; The seeds are all oily, sticky, dark brown and spicy, which have been seriously deteriorated and cannot be eaten. ⑤ observation method of kernel taking: the plump kernel is the first, and the ten shriveled kernels are the second; The color of kernel coat is yellow and white, followed by dark yellow and brown yellow, and the quality of "tiger walnut" with dark brown spots is not good.
Walnut is a very nutritious fruit, which can be counted as a kind of fruit. It can protect the heart function, so it is liked by many elderly people. In fact, there are many benefits of walnuts, not only for the elderly, but also for young and middle-aged people.