The best preservation methods for fresh walnuts in shells include refrigerated storage, sun-dried storage, and vacuum packaging.
Refrigerated storage: Put the fresh walnuts in a sealed bag, expel the air as much as possible, and then put them in the refrigerator. The low temperature environment can effectively delay the oxidation and deterioration of walnuts, and usually keep them fresh for about a month.
Sun-dried storage: Place the fresh walnuts in a sunny place to dry until the shell is dry and the texture becomes hard. This method can not only remove moisture and prevent deterioration, but also preserve walnuts for a long time, but the taste may change.
Vacuum packaging: Use vacuum packaging technology to put fresh walnuts in a vacuum bag and exclude air to achieve the purpose of long-term storage. This method can effectively isolate the air, prevent oxidation and deterioration, and keep clean and hygienic.
Oil-sealed storage: Put the fresh walnuts in a glass bottle, pour in an appropriate amount of edible oil (such as olive oil, peanut oil, etc.), the amount of oil should cover the surface of the walnuts, then seal the bottle mouth and store it in a cool and ventilated place. This method can delay the oxidation and deterioration of walnuts, keep them moist, and make them taste more delicious.
