McDonald's Re-Engineers Straw Using Fibonacci Formula To Let You Enjoy Shamrock Shake More McDonald's has contracted two engineering firms to produce a special straw that can optimize the Shamrock Shake's Flavor. The limited edition straws were developed for several months. by Chris Loterina
Culture 11 Reasons Why The McDonald's Shamrock Shake Is The Pumpkin Spice Latte Of Spring 2015 by Laura Rosenfeld