The rations in Assassin's Creed: Shadow are very important and can be used to heal yourself in battle, and in order to get more rations, you need to interact with ration supply stations that are occasionally located in Daming City, temples, and anywhere you may be fighting with enemies.
How to replenish rations for Assassin's Creed Shadow
Meal box, just fill up the rations
To get more rations, you need to interact with the rations replenishment station. These supply stations are occasionally located in Daming City, temples, and anywhere you may be fighting with the enemy. You can usually find them near the seated enemies—these enemies are resting with snacks, which means they can definitely pack spicy strips in their bags, right?
Some enemies will also use rations as trophy, so their bodies will drop rations, which is also one of the ways to replenish them. For safety reasons, you can also buy them from (some) merchants.