It's just my personal opinion. But you can take it either as a comparison or as a theory.

Jabami Yumeko has the same Japanese voice actor as Azazel Ameri from the Mairimashita! Iruma-kun series and as Yor Forger from the Spy×Family series.

And both Ameri and Yor are totally parallel to cooking. More specifically, their cooking is deadly poison. However Yor is good at cleaning considering the fact that her secret job is assassination. And as an assassin you must leave no trace that leads to the fact that you are the perpetrator.

But if Yumeko Jabami is as good at gambling as she is totally parallel at cooking. In short, if Yumeko were to cook something, there could be a chance that the food she cooked would actually be some kind of deadly poison for anybody eats that food.

Well, in the case of the Spy×Family series, Loid is the one who cooks the food instead of Yor. So I think that Suzui Ryota could do the same in terms of cooking instead of Yumeko.