So, what if you don't quite hit that magic number? Well, let's just say it's not the end of the world, but it's definitely not ideal! If the turkey breast is undercooked, it can lead to food poisoning, which is no fun at all!
It's like when you're playing a game, and you don't quite follow the rules - you might get away with it, but you're also taking a risk! In this case, the risk is not worth it, so it's best to aim for that 165°F (74°C) mark.
Perfect Boneless Roasted Turkey Breast: Ideal Internal Temperature
On the other hand, if you overcook the turkey breast, it can become dry and flavorless. That's like, the opposite of what you're aiming for, right? You want it to be juicy and delicious, not tough and tasteless!