Sweetness and acidity have an intuitive relationship; we know they go together without having to think about it. Balance between sweetness and acidity is why even people who attest to disliking sweet wines will often enjoy Rieslings. But why do sweetness and acidity mutually improve each other?
Human beings, as a whole, love sweet. Studies have shown that newborn babies, when given a choice, prefer sugar water over milk. We begin life with a sweet tooth, even while that bud is still locked inside the confines of our tiny gums. For most of us, the craving continues to haunt, delight, plague and pleasure us for the rest of our days.