The challange that Elena gave to all her fellow chefs was for them to create something which could match up to the dishes that she had just served. It sounded like an impossible challenge because of her insane cooking skills but that was actually not the case.
The food that Elena had server to the general population, it was not made from any insanely high level material. She had used regular ingredients and had managed to bring out their taste to the fullest possible extent.
So with enough effort, care and dedication, doing the same was not impossible for another chef. They would most probably not be able to bring out the best taste for all the ingredients like Elena but most of the chefs had their own speciality. And for that special ingredient of theirs, they should reach at least to close to Elena's results.
