The Food Factory produces food inside your base. Food is used in building upgrades alongside iron and coins. The first factory requires Base level 9; additional plots have their own construction requirements.
How food production works
Output is measured per hour. A level 1 factory produces 1,440 food per hour, rising to 11,520 at level 10 and 33,840 at level 30. These are production rates, not a one-time reward for completing the upgrade.
Resource production can reach capacity. When it does, the game prompts you to collect, so leaving a factory full means its hourly rate alone will not describe what you actually collect over a long absence.
Production and protected food
The factory's job is to produce food. The Food Warehouse increases the quantity of protected food, which is a separate stat. Raising one does not substitute for raising the other.
The Iron Mine supplies iron on its own production track. Although food and iron often appear together in construction costs, each resource has to be obtained separately.
