Which size of smoothie uses a yellow scoop for ice?

The Grande size smoothie uses a yellow scoop for ice because it is the standard measurement for that particular size in the preparation process. In Starbucks operations, each size of drink corresponds to a specific scoop size for ice, allowing for consistency in the recipe and texture. The Grande size has a designated amount of ice that is measured with the yellow scoop, enabling the drink to maintain the right balance of ingredients and achieve the desired taste and consistency.

Other sizes, such as Tall and Venti, use different scoops tailored to their specific volumes, which is why they do not use the yellow scoop for ice. The system of scoop sizes is crucial for ensuring that each drink is made consistently, regardless of which barista is preparing it.