Normal duck neck will not be very fresh if it is refrigerated for about two days, but it can be frozen for more than one week, but the taste may not be as good as before. So it's best to buy this food now and eat it fresh. After the food is put in the refrigerator, the low temperature can't freeze the bacteria to death, but it only inhibits their reproduction. This kind of bacteria is still alive and will grow and multiply rapidly at room temperature after being taken out. The scientific storage method is that raw and cooked food should be put on the shelf in the refrigerator, cooked food on the upper floor and raw food on the lower floor. Except canned food, general food should not be stored for more than one week. It's best to put the cooked food in the refrigerator in a box with a cover, or tie a plate or bowl. If the rest is left, it is best to keep it in a container or add plastic wrap.