How to keep cold drinks consistent in a busy beverage shop

Cold drinks are where consistency gets quietly messy. Hot coffee shows mistakes fast, but iced drinks can hide problems under syrup, milk, foam, fruit, and ice. I have seen two baristas make the same menu item and end up with one drink that tastes thin and another that tastes too sweet. For me the biggest issue is not the recipe card itself. It is how the recipe gets used during rush. If ice scoo…