noun
preserved food; emergency rations
Refers to food that has been processed to last a long time, such as canned goods, dried foods, or emergency supplies.
災害に備えて保存食を用意しておく。
I keep preserved food on hand in case of a disaster.
この保存食は賞味期限が長い。
This preserved food has a long shelf life.
缶詰 means canned food, a common type of 保存食.
Compound of 保存 (preservation) and 食 (food).