Food production seems to confuse a lot of people so here is a short explanation of the cycle, each production cycle takes 15 minutes:
- Food is consumed, each servant needs one food. Starvation is based on food available.
- Food decay, 20% of any left over food is lost, 5% if your city has a granary.
- Food production, Farmers produce food base on city production modifiers.
As you can see, as long as your food production exceeds your consumption you should be safe unless your food gets eaten by rats, burns in a fire or is stolen by hostile players, Monsters or Thieves. Make sure to hire guards, watchmen and rat catchers to prevent unplanned starvation!