Was it once illegal for kids to drink Milkshakes?

Who invented the Milkshake? What invention helped make Milkshakes so popular? How do you make the perfect Milkshake? Thank you for being a Who Smarted + Subscriber! Get official Who Smarted? Merch: tee-shirts, mugs, hoodies and more, at Who Smarted? For more information about our other projects, including bespoke branded podcasts and series for your company, check out  Atomic Entertainment.