Apple pie: cinnamon, sugar, flour, butter, apples, Crisco or lard, salt. Not too many ingredients. And, like any food, the higher the quality of ingredients, the better the potential flavor of the finished product.
Let’s imagine for a moment that you spend the time and money to source the absolute best quality ingredients, across the board. Everything is naturally grown, organic, and processed purely and carefully. But you use proportions that are slightly out of whack. Too much cinnamon, too much salt, and your imperfect combination of perfect ingredients is just awful.