We're racing to the drive-thru for this treat.Credit: Adobe/AllrecipesWhen you're picking up a meal at the drive-thru, chances are you’re also adding a refreshing drink to your order. Maybe you’re a fan of Mountain Dew Baja Blast from Taco Bell, or you’re heading to McDonald’s specifically for a large cup of Sprite that truly tastes better than any other fast food chain’s soda. You may opt for lemonade or even Mr. Pibb, but I’m willing to bet th…