If you have been wondering, “Whats for dinner?”, there is a great player created page on the official Guild Wars Wiki that will help you in your decision. Acromir has compiled a comprehensive list of useful food that is sorted by level and categorized by specific buffs received by the player.
The page has all foods listed on the Chef wiki page that provide a significant buff. It is interesting to see how groups of foods provide different effects; such as: pizzas are good for increasing condition duration and damage, while salads are great for swiftness.
Check out the wiki page for the complete list.