Varghese Kurien was the visionary behind Amul's marketing strategy. To compete with the popular Polson Butter in the 1960s, Amul's advertising agency Dacunha created the iconic "Utterly Butterly Delicious" slogan and Amul girl mascot. Over the past 50 years, Amul's humorous and non-instructional advertisements featuring the Amul girl have helped it become India's longest-running outdoor advertising campaign, reaching billions of customers. Amul's marketing strategy effectively connected with audiences through relatable messages and established a sense of trust and familiarity with customers.