Unpopular opinion: the best cooking tip I ever got came from a dishwasher, not a chef
Back in 2019 I was working a busy line in Portland and complaining to the dishwasher, Marco, about my sauces breaking every single service. He looked at me and said, "You're not tasting it cold enough," so I started pulling a spoonful and chilling it on the freezer door before adjusting. Cut my broken sauce tickets in half that month, and I still do it every time. Has anyone else picked up a habit from someone on the dish side that stuck?
Cold sauce does taste different, but that's not why yours was breaking. Sauces break from heat and fat separating, so chilling a spoon just lets you taste the real salt and acid levels without burning your tongue. Marco gave you a solid habit, just not the one you think he did.