I didnt yet. When I left home i was too poor together any real ingredients, and lived off whatever the supermarket was selling for "about to throw it away" prices. Usually cakes and bread, remade sandwiches and whatever. Now that I'm in a real family again the other members are all super picky and only eat about 5 meals, so theres no room for trial/error to learn, and most staple ingredients are blacklisted anyway.