This is still done today with some premium milk in the US - e.g. Strauss milk: https://www.strausfamilycreamery.com/simple-faqs/what-should-i-do-with-my-empty-r

This is still done today with some premium milk in the US - e.g. Strauss milk: https://www.strausfamilycreamery.com/simple-faqs/what-should-i-do-with-my-empty-reusable-straus-bottles/ https://www.strausfamilycreamery.com/simple-faqs/what-should...