Only a novice would think that it's just about the ingredients.

[He scoffs. He knows that Shouto is probably teasing him, so he counters it with an insult.

Bastard. Next time he's making him toast.]

[Katsuki sips his tea, setting it down.] My parents work late nights a lot. They're both designers, it comes with the territory. They're successful enough to where they can work at home now, but it was a choice between learning to cook or eating crappy take-out, and I wasn't going to settle for that.