its not like he opened the door with a smile on his face. He was fed up with the shenanigans they were pulling so he wasnt exactly having fun to begin with.
Considering he went to get his daughter and came back. From the moment he hang up the call to when she got home, there should be at least 10 minutes time frame.
Prepared broth and ingredients can be bought at street restaurant. Lay out on the table in 5 minutes and should be pillowing smoke before 10 minutes.
Adding on the fact they havent started eating yet. I would say its still plausible deniabillity to just say they show up with the hotpot right after he hang up.
