Loki was looking at her . he knew they wouldn't have time to cook if they were under attack. He hoped that at least they would have time to eat. He knew he needed the energy to fight.
He looked at her "Peanut butter Jelly?" He seemed confused nit knowing what that was. 
The god felt his stomach growl. He knew he was hungry. He hoped what she was making was good. He still hadn't tried everything on Midgard, He knew if they were under attack he would fight best he could hungry or not.