For decades they were as frequent Dunkin, in relation to the chain's easily identifiable foam cups as much as they were with the hot brewed drinks.
Because heat flowed through the polystyrene cups and made them difficult to handle, people often put in an extra foam cup as insulation.
And in a flash to many longtime customers who used to double-tap each time they took coffee, Dunkin's helps them warm up to the new cups.
Dunkin & # 39; has baristas with sticks that read "the double cup breaks up." [1
New paper cups are more environmentally friendly
At that time it had already begun introducing double-walled paper cups in its more than 9,000 US stores using them in a concept store outside Boston that opened in January 2018.
The entire transition is expected to be completed by April 2020.
Most of Dunkin's 3,400 stores outside the United States have already converted to paper cups, and the remaining international stores will reach the spring 2020 transition goal, the company said.
The chain has made several other sustainability improvements over the past decade, switching to recycled paper napkins in 2009 and switching to using bagel bags with 100% recycled paper in 2014.