McDonald's to test CosMc's-inspired drinks at more than 500 restaurants
1. McDonald's tests new drinks to attract younger consumers this summer. 2. New drinks include unique flavors to compete with beverage chains. 3. Same-store sales fell 3.6%, prompting this beverage strategy shift. 4. Expansion follows the shuttering of the CosMc's brand locations. 5. Fast-food rivals are also diversifying their drink offerings.