I've been watching old eps of Gordon Ramsey's Kitchen Nightmares (USA
edition). More than once, I've seen Gordon tear into chefs fer not
knowing that putting a hot soup/sauce into a cold refrigerator makes sed
soup/sauce "sour". True?

I've been doing this (putting semi-hot soup in fridge) fer years. IME,
letting soup/sauce cool on range-top prior to putting in refrigerator
cause item to spoil sooner. Yes? No?

nb