National Milkshake Day

History & origins

National Milkshake Day is an informal food observance in the United States that spotlights the classic milkshake, usually tied to ice cream shops, diners, and restaurant promotions. The exact origin and founder are unclear, and no single official creator is widely documented, so it is best described as a modern promotional observance rather than a formally proclaimed holiday. Its roots draw on the long American history of milkshakes, which evolved from late-19th-century drinks into the thick, ice-cream-based treat people know today.

Why it matters

National Milkshake Day keeps a nostalgic American diner staple in the spotlight and gives local restaurants a chance to attract customers with limited-time specials. It also reflects how comfort foods can shape food culture, from classic vanilla and chocolate shakes to creative seasonal flavors that drive social sharing and menu experimentation.

How to celebrate

Get milkshake deals at restaurants and ice cream shops. Make homemade milkshakes. Try creative flavor combinations. Visit classic American diners. Share milkshake photos on social media.

Facts

• The electric blender revolutionized milkshake making in the 1920s
• Americans drink hundreds of millions of milkshakes annually
• Milkshakes were originally alcoholic in the late 1800s
• The largest milkshake ever made was 6,000 gallons
• Chocolate is the most popular milkshake flavor

Upcoming dates

• Saturday, September 12, 2026
• Sunday, September 12, 2027
• Tuesday, September 12, 2028
• Wednesday, September 12, 2029
• Thursday, September 12, 2030