Finally figured out why I love Lay’s ketchup chips while others don’t. One has to eat enough to pass a threshold to enjoy the ketchup flavour. Because if one doesn’t, the sour from the ketchup flavour is too pronounced. Once one eats enough, one becomes adjusted to the sour, and the sweet from the ketchup flavour emerges. And that is the fucking jackpot! So eat enough of it, and you will love the flavour.