The Wendyโ€™s Frosty holds a place of unique importance in the fast-food landscape, merging milkshake and ice cream qualities into a signature treat beloved since its inception in 1969. Dave Thomas, Wendyโ€™s founder, created the Frosty to accompany the brandโ€™s now-iconic square hamburgers, and the original chocolate flavor became an instant classic, sparking a long-standing…