I've hardly had the opportunity to learn to cook myself, if for different reasons.

[He doesn't take after Shido. Which means he must look a great deal like his mother, and Haru doubts that Shido is so unobservant that he wouldn't eventually draw the connection, even if he doesn't care about what it means.]

If there's a benefit to this place, then it's that we have these pieces of information now, and a little time to figure out what to do with them.