Cooking is the art of cookery
Thank you for that information can you tell me a little more about cookery ?
Cooking techniques and ingredients varies
How do they vary ? Can you give me an example
Cooking is done on fire or stove or oven
Oh okay thank you for that information 
They ways or types of cooking also depend on the skill and type of training an individual cook has
Yeah i bet there are various methods of cooking .  That would make sense 
New inventions and technologies such for boiling, cooking