How did they cook?

well, cook on means cooking over something or having a cooking competition

Basically, a pastry chef cooks pastries. I don't want to be so blunt here. Pastries are food items that are prepared through baking. Cakes, pies and similar dishes would be examples.

No

Because cooked foods are easier to digest, and can be kept longer than raw foods.

Chocolate chip cookies.... little easy desserts...veggies....potatoes. You could also have a go at a traditional dish like shepher'd pie or spag bol if you have a good recipe.