Why Do Salty and Sweet Flavors Taste Good Together? | Eater

"The chain’s Frosty paired with french fries is a widely loved sweet-and-salty ritual: dipping a crispy, salty fry into a cold, creamy Frosty is often described as the perfect blend of texture, temperature, and contrasting flavors, something many people discover intuitively or by copying a sibling. Fans recall it as a nostalgic, instinctive treat that just “made sense.” There is also a limited-time summer promotion offering a Frosty for 50¢ at participating locations, making the combo an inexpensive, easy indulgence." - Vox Creative