For 20 years it was possible to buy ingame food but no longer since the upcoming update that is just about to hit the shelves soon
Blizzard said they remove the eating feature from the game.
Blizzard claims it wasnt used all that much.
At least something new was added as well:
lorewalking
You can opt to go on lorewalking with your character around a WoW world and then you learn the lore of the place where you are in, this covers all of the 20 year history of the game
Lorewalking would be most useful for new players who havent been around for 20 years