Palate as in food, not color palate.
But it's viewing ancient eating habits on modern desires in food.
Back then it would have been less "tastes good" and more "has what caveman crave" whatever that would be at that moment.
Like, "taste" as a system is about identifying if something to eat has what our body's need.
For prehistoric people having something that helps them keep a somewhat balanced diet, is better than telling what has the most sugar in it.
Like, everybody was basically just having pregnancy cravings their whole lives.