Spezi
Spezi is the brand name for a soft drink owned by Brauhaus Riegele in Augsburg, Germany. Spezi is a genericized trademark and the name is used as a generic term for a mixture of cola and orange soda (orangeade) in most German-speaking countries. When the brand was registered in 1956, Riegele at first sold beer under the trademark. Since the 1970s, Spezi has been produced and bottled by different local breweries under a franchising agreement. The first Original Spezi Cola Orange TV commercial aired in 1989.
Source: Wikipedia
Recipes

Fizz-tastic Fusion: The Perfect Spezi Recipe
Spezi is a refreshing German soft drink made by combining cola and orange soda. With a perfect balance of flavors, this homemade version is easy to make. Simply mix equal parts cola and orange soda, add ice, and stir. Garnish with a lemon or lime wedge...