Kitchen (Luigi's Mansion)
From the Super Mario Wiki
The Kitchen (Japanese: 台所 Kitchen) is a room in the second area of Luigi's Mansion.
After Luigi defeats Mr. Luggs, he enters the Kitchen next door. Luigi finds a Flash ghost in the refrigerator and captures it with a Fire Element. After Luigi captures the ghost, the lights turn on and a chest appears with the Water Element Medal.
A Speedy Spirit is hidden in the dishwasher.
There is a 20% chance that a Gold Mouse will appear the moment Luigi enters the room.
If the player uses the Fire Element on the oven, a Ruby will pop out.
Ghosts in The Kitchen in the PAL Hidden Mansion
Ghosts in The Kitchen during the blackout