A fridge was a storage unit used to maintain the cold temperature of food items, such as milk. (DS9: "Far Beyond the Stars")
In 1996, Rain Robinson kept a six-pack in her fridge. She mentioned this to Henry Starling when he asked her if she thought "E.T." liked Chateau Coeur. (VOY: "Future's End")
Loomis kept beer in his fridge. (ENT: "Carpenter Street")
There was a fridge in Tallinn's apartment in 2024. (PIC: "Fly Me to the Moon")