Nearly every vendor's recipe is different — some load theirs with ginger for heat, others go fruitier with pineapple, so the 'same' drink tastes different from cart to cart.
Sobolo is a chilled, deep-red drink brewed from dried hibiscus calyces with ginger, cloves, and often pineapple, then sweetened and served ice-cold. It's sold from coolers by street vendors weaving through Ghanaian traffic, and shows up at naming ceremonies, weddings, and funerals alike.