Triple Berry was a Mountain Dew flavor exclusively available in soda fountain machines only at Applebee's restaurants released in 2015 in the United States. Sometime in 2016, it was removed from their online menu, marking its presumptive discontinuation.
Triple Berry was a Berry Lime flavor of Mountain Dew, and its color has a pinkish-red look. It was somewhat similar to both berry lime flavors, Game Fuel (Berry Lime), and Berry Monsoon. However, Triple Berry did not have the same "berry lime" flavor as those two previously mentioned flavors (which are blue green in color), but instead sported its own unique "berry lime" flavor.
Applebee's described it as "Mountain Dew with Berry Syrup & Lime."