Training in cooking should begin at RuneScape gold Shilo Village since there is the fishing spot right next to an bank. You're looking to capture Trout and Salmon, which you will prepare later the menu in Rogue's Den or the Hosidius Kitchen. These two locations both have the area that has a permanent fire source which can be used for cooking , as well as banks that are right next to them. It makes learning easy and faster than with most of the abilities. If you've already banked fish as part of your Fishing instruction, you won't run into problems with the resources available.
Once you reach level 65, you might start making Pineapple Pizzas at the Mess Hall, which lies to the south of Great Kourend statue. In order to get there you'll need a 45% favor with Hosidius house. The activity is done without the use of resources thus if you've been dropping your fishes onto the ground while you were fishing then this is the ideal method to level you. It provides the same kind of experience as normal cooking techniques.
Although the method of training for Ironman on buy OSRS GP this skill does have a lot in common with the basic ones it is necessary to find the resources yourself. Since Construction is a skill that requires the greatest amount of resources, you'll spend most of the time collecting them instead of the actual training.