Inca Kola Single serving of caffeine-rich, golden Inca Kola soda. (Inka Cola) Inca Kola is an enormously popular drink in Peru. It smells and tastes quite a bit like Bubble Yum bubble gum, and has a sugar content surpassing Mountain Dew. It also possesses that highly valued yellow color.It is an essential part of any trip to Peruvian shores.