Original Commentary
I get the feeling that Kimberly is not a great cook, but could make a decent meatloaf or shepherd's pie if need be. I get the feeling that Brisbane can make a decent batch of scrambled eggs... after a few tries. I also get the feeling that those two were eating nothing but scrambled eggs for that week.

Modern Commentary
Brisbane becomes a good cook. As of now in the comic, he generally knows what he's doing but he doesn't have the tools or supplies that he was used to, growing up. He's doing ok with what he has and will quietly rebuild his pantry and equipment as the series goes on.
And it wasn't his fault. Kimberly caught this a few days before they went to the park. But Brisbane isn't really sure of himself, especially when it comes to all things Kimberly. - Terrence