On BA everything is cooked in identical ovens whether you are in F/J/Y.
Even the scambled eggs for brekkie in F but they are cooked ban-marie style then whisked up with a fork. However some people like to use the foamer on the cappucino maker to make individual portions of egg.
Yes even the toast comes on in First pre toasted and we just re heat!
The foods basically arrive in what we call 'kits'. So you order the Tikka Masala and we have a 'Chef's Chat' tellin us which section of the kit i.e the rice or the meat goes in the oven when and for how long. It also gives us the list of accompanied foods i.e naan breads and step by step pictures on presentation which should always be followed.
In Club (J) - The foods arrive loaded into the ovens in the China dishes and cooked exactly like the Y meals.
Only exception is the Pasta dishes which arrive in and are cooked in platic bowls then 'tiped' into a pre heated pasta bowl...hence the name 'tip and slip'!