My first sous-vide chicken breast went to 165°F because that is what I learned was safe. After two hours in the bath and a quick sear, it had the texture of a rubber eraser.
I could not figure out what went wrong. The whole point of this method was supposed to be moist chicken.
The Temperature Confusion
Traditional cooking requires 165°F for instant pasteurization. Sous-vide achieves the same safety at lower temperatures through extended time. Chicken at 145°F for 90 minutes is both safe and actually tender.
Nobody explained this distinction to me. I assumed the temperature rules were universal across all cooking methods. They are not.
How I Cook Chicken Now
I run chicken breasts at 145°F for 90 minutes. The texture is completely different. Still safe, just using time instead of higher heat to kill bacteria.
I also learned to check multiple sources instead of assuming my existing knowledge transfers directly. Different cooking methods have different rules, and sous-vide safety guidelines are not intuitive if you come from traditional cooking backgrounds.