Store extra long-life or non-perishable food (tinned or dry food), and avoid foods that have to be cooked unless you have a portable cooker or barbeque.
In a major disaster, electricity may not be working. Ensure that you have alternative cooking equipment, as you may not be able to use your stove or microwave.
A camping stove or barbecue (gas or charcoal) is useful to boil water and cook food. Gas barbecues are a relatively inefficient use of fuel, but they will do if you haven't got anything better. Team up with your neighbours to make things more efficient.
If anyone in your house has special requirements you need to consider having extra supplies e.g. children/babies, pets, special dietary requirements, medication, etc.
If the packaging doesn't have a clear "best before" or "use by" date, write the purchase date on the package with a permanent marker. Things like tinned food, dried fruit and rice have a shelf life of about 2 years. Remember to use old stock first, and replace expired items.
Ready to eat canned/bottled food
Dried and long life food (don't forget to store extra water for cooking these!)