What is the last step in making a Tall Green Tea Latte after adding the matcha powder and milk?

The final step in preparing a Tall Green Tea Latte, after adding the matcha powder and milk, is to fill the cup to the top with the matcha/milk mixture. This step is crucial because it ensures that the drink is properly mixed and has the right balance of flavors and textures. The matcha powder needs to be fully incorporated with the milk to achieve a smooth, creamy consistency that characterizes the latte. By filling the cup to the top, you also allow the drink to maintain its intended presentation and ensure that there is enough volume for the customer to enjoy.

While other steps may involve additional components or methods, such as adding hot water or whipped cream, these are not included as the last step in making the latte itself. Letting it steep is also not applicable here since matcha is meant to be immediately mixed rather than steeped like a traditional tea bag. Thus, filling the cup with the matcha/milk mixture is the correct final step in this process.