Whether it’s a grilled cheese sandwich with tomato soup, maple-cured bacon sizzling hot from the pan, or a salted caramel coated in dark chocolate, you know when food tastes good to you. But you may not know the amazing story behind why you love some foods and can’t tolerate others.Whether it’s a grilled cheese sandwich with tomato soup, maple-cured bacon sizzling hot from the pan, or a salted caramel coated in dark chocolate, you know...